When data is collected in a statistical study for only portion or subset of all element of interest we are using a sample.
We frequently collect data from samples, or smaller subsets of the population, as opposed to the entire population as a whole.
A sample is a subset of units chosen to represent all the individuals in the population. Because just a portion of the population was counted, it is only a partial enumeration. To estimate the characteristics for the total population of interest, data from the sampled units is used.
For instance, a medical study looks at how a certain disease spreads among city's stray canines. The population of interest in this case are the city's street dogs. This sample or population of interest corresponds to the overall population on which you want to draw conclusions.
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Consider this expressi
√2³ 7 + |-4|
how many different possible options of combinations are available in binary code using eight bits?
1. 64
2. 16
3. 128
4. 256
There are a total (4) 2⁸ = 256 possible methods to join 8 bits or 8 binary digits.
What are binary codes?A binary code uses a two-symbol system to represent text, computer processor instructions, or any other data.
The binary number system's "0" and "1" are frequently employed as the two symbols in this system.
Each character, command, etc. is given a set of binary digits, often referred to as bits, by the binary code.
A binary string of eight bits (also known as a byte) can, for instance, represent any of 256 possible values and hence a vast range of distinct things.
8 bits, or 8 binary digits, can be combined in 2⁸=256 different ways.
Some of these combinations are shown in the following table.
(The number in parentheses is the equivalent in decimal form.)
Therefore, there are a total (4) 2⁸ = 256 possible methods to join 8 bits or 8 binary digits.
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Can you please help me fast
Answer: The slope of the line is 3; option A is correct.
Step-by-step explanation:
The perimeter of a rectangle is 76 inches. Find the length and width if the length is an integer and the width is 2 times the next consecutive integer.
The length and the width of the rectangle are 8. 5 inches and 21 inches
How to determine the value of the sidesIt is important to note the the formula for the perimeter of a rectangle is expressed as;
P = 2(L + W)
Given that;
P is the perimeter of the rectangleL is the length of the rectangleW is the width of the rectangleWe have that;
P = 76 Inches
L = l
W = 2(l + 2)
Substitute the values
76 = 2( l + 2l + 4)
collect like terms
76 = 2(4l + 4)
expand the bracket
76 = 8l + 8
collect like terms
8l = 68
l = 8. 5 inches
Width, w = 21 inches
Hence, the values are 21 inches and 8. 5 inches
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The length and width of the rectangle are 12inches and 26 inches
What is perimeter of a rectangle?The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides.
Represent the length of the rectangle by x and width by y
y = 2(x+1)
P = 2(l+w)
Represent 2(x+1) for y
P= 2(x + 2( x+1) )
P= 2( x+ 2x +2)
P = 2(3x+2)
P =6x +4
76 = 6x +4
6x = 76 - 4
6x = 72
divide both sides by 6
x = 72/6
x = 12
y = 2( 12+1)
y = 2× 13
y = 26 inches
therefore the length of the rectangle is 12inches and the width is 26inches
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Is the trapezoidal rule an overestimate or underestimate?
The trapezoidal rule is a numerical integration method that frequently overestimates the real value of a function's definite integral.
What is trapezoidal rule?The trapezoidal rule is a strategy for approximating the definite integral in calculus. The trapezoidal rule works by computing the area of the region under the graph of the function f(x) that is approximated as a trapezoid. The trapezoidal rule is commonly used to calculate the area under curves. This is achievable if the overall area is divided into smaller trapezoids rather than rectangles. The Trapezoidal Rule integration determines the area by approximating the area under a function's graph as a trapezoid. The midway rule uses rectangular areas to approximate the definite integral, whereas the trapezoidal rule uses trapezoidal approximations to approximate the definite integral. Simpson's approach works by first approximating the original function with piecewise quadratic functions.
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Graph the image of △FGH after a dilation with a scale factor of 2, centered at the origin.
Answer:
Step-by-step explanation:
1. Each point moves 3 times as far from the origin as it was.
2. Each point moves to 1/3 its previous distance from the origin.
3. Each point moves twice as far from (2, 2) as it was.
1. Each point moves 3 times as far from the - 1
help me plsssssssssssssssssss
Answer:
The answer is D.
Step-by-step explanation:
8/5w = 40
Simplify your answer as much as possible.
Answer:
w = 25
Step-by-step explanation:
8/5w = 40
Divided both sides by 8/5
w = 25
Let's check
8/5(25) = 40
40 = 40
So, w = 25 is the correct answer.
Answer: w = 25
Step-by-step explanation:
To solve for w, we will isolate the variable by using inverse operations.
Given:
[tex]\displaystyle \frac{8}{5} w=40[/tex]
Divide both sides of the equation by [tex]\frac{8}{5}[/tex]:
* Note: w is being multiplied by [tex]\frac{8}{5}[/tex], so the inverse operation is division
[tex]\displaystyle w=\frac{40}{\frac{8}{5 } } \mapsto w=40*\frac{5}{8} \mapsto w=*\frac{40*5}{8} \mapsto\frac{200}{8} \mapsto \boxed{w=25}[/tex]
Generally, which one of the following is the least appropriate measure of central tendency for a data set that contains outliers? a. mean b. median c. 2nd quartile d. 50th percentile An important measure of location for categorical data is the a. mean b. median c. mode d. margirn
mean the least appropriate measure of central tendency for a data set that contains outliers
What is a mean in math?The mean (aka the arithmetic mean, different from the geometric mean) of a dataset is the sum of all values divided by the total number of values. It's the most commonly used measure of central tendency and is often referred to as the “average.The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to greatest. The mode is the number that occurs most often in a data setMean is the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers. Mean = (Sum of all the observations/Total number of observations) Example: What is the mean of 2, 4, 6, 8 and 10To learn more about mean refers to:
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Tony wants to use his savings at the end of march to buy video games. The game cost $35.75 each. How many games can Tony buy?
Alice wants to use her savings at the end of two months to buy concert tickets. If the concert tickets cost $17.50 each, How many can she buy?
1. The number of games that Tony can buy will be 3 games.
2. The number of tickets that Alice can buy will be 6 games.
How to calculate the valuesA word problem in mathematics simply refers to a question that is written as a sentence or in some cases more than one sentence which requires an individual to use his or her mathematics knowledge to solve the real life scenario given.
The number of games that Tony can buy will be:
= (35.4 + 18.2) × 2.50 / 33.75
= 3.9
= 3 rounding down
The number of tickets that Alice can buy will be:
= (21.8 + 26.6) × 2.50 / 17.50
= 6 games.
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chad is responsible for painting the front of a barn red and the doors white. each door measures 18 feet by 6 feet. if a gallon of paint covers 250 square feet, how many gallons of red and white paint will chad need to purchase
Chad will purchase 0.432 gallons of red and white paint.
What is division?The division is the process of repetitive subtraction. It is the inverse of the multiplication operation. It is defined as the act of forming equal groups.
Given
Dimension of the door = 18 feet by 6 feet
Area of the door = 108 square feet
1 gallon of paint covers 250 square feet
Let x gallon paint covers 108 square feet
Proportion of paint to area covered
1/250 = x/108
x = 108/250
x = 0.432
Hence, 0.432 gallons of red and white paint, Chad will purchase.
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how many minutes are in 2/5 of the day you must show your working
Answer:
576 minutes
Step-by-step explanation:
You first must convert the time of a day into minutes.
24 hours x 60 minutes = 1440 minutes in a day.
Now you need to multiply the sum by 2/5
1440/1 x 2/5 = 2880/5
Simplify the number into a whole number.
2880 divided by 5 = 576
graph the opposite of 6 on the number line
The opposite of 6 would be -6
HELP pls will mark you the brainliest
Answer:
first one; Y=4x+8
second one; Y=2x+20
3rd: kites are fun and then windy kites
Step-by-step explanation:
If f(x) = 9x ^ 3 + 45x ^ 2 + 26x - 40 and x + 4 is a factor of f(x) then find all of the zeros of f() algebraically.
All the zeroes of f(x) are, - 4, 3/2, - 5/3
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
The function is,
⇒ f(x) = 9x³ + 45x² + 26x - 40
And, (x + 4) is a factor of f(x).
Now, Divide the function as;
⇒ x + 4 ) 9x³ + 45x² + 26x - 40 ( 9x² + 9x - 10
9x³ + 36x²
- -
------------------------
9x² + 26x
9x² + 36x
- -
-----------------------
- 10x - 40
- 10x - 40
------------------
0
Thus, All the factors of function f (x) is,
⇒ (x + 4) (9x² + 9x - 10)
⇒ (x + 4) (9x² + 15x - 6x - 10)
⇒ (x + 4) (3x(3x + 5) - 2(3x + 5))
⇒ (x + 4) (3x - 2) (3x + 5)
Thus, All the zeroes are,
⇒ x + 4 = 0 ⇒ x = - 4
⇒ 3x - 2 = 0 ⇒ x = 2/3
⇒ 3x + 5 = 0 ⇒ x = - 5/3
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an airplane is at an elevation of 30000 ft when it begins to approach to an airport. its angle of depression is 8 degrees. what is the distance between the airport and the point on the ground directtly below the plane
The distance between the airport and the point on the ground directtly below the plane is x=-4411.95221
A plane in geometry is a two-dimensional, flat surface. It has no thickness and never ends. An example of a geometric plane might be a sheet of paper or the surface of a wall. The term "plane figures" refers to the flat geometric shapes. In geometry, a plane is a surface made up of all the lines that are parallel to one another and connect any two locations on it. It is a level or flat surface, to put it another way. A plane is uniquely defined in any of the following ways in a Euclidean space of any number of dimensions: with the aid of three non-collinear points. A plane is a fictitious flat surface that passes through the body.
Based on the given,
Formulate:
[tex]tan8=\frac{30000}{x}[/tex]
Evaluate the equation/expression:
[tex]x=-4411.95221[/tex]
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a circle is divided into 4 sectors, the ratio of whose areas is what is the central angle of the largest sector in degrees?
With the ratio of 1 : 2 : 3 : 6, the central angle of the largest sector of the circle is 180°.
A circle is a two-dimensional shape consisting of all points in a plane that are at a given distance from the center. Equivalently, we can define a circle to be the curve traced out by a point that moves in a plane so that its distance from the center (a given point) is constant.
A sector is defined to be a part of a circle that is made of the arc of the circle along with its two radii. The shape of a sector of a circle is identical to the shape of a slice of pie or pizza.
We're given a ratio of 1 : 2 : 3 : 6 of all the 4 sectors of a circle. The largest sector in degrees is indicated by 6 out of 12 (12 being the sum of numbers in the ratio). We know that a circle is divided into 360°. Therefore, the central angle θ of the largest sector is:
θ = 6/12 x 360°
θ = 1/2 x 360°
θ = 180°.
The complete question is "A circle is divided into 4 sectors, and the ratio of whose areas is 1 : 2 : 3 : 6. What is the central angle of the largest sector in degrees?"
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For which system of inequalities is (-3, 1) a solution?
x+y<-2 and 2x-3y <-9
x+y<-2 and 2x-3y <-9
x+y≤-2 and 2x-3y <-9
x+y≤-2 and 2x-3y ≤-9
In light of the query we've got D)x + y ≤ -2 and 2x - 3y ≤ -9 is a pair of inequalities for (-3, 1) is the correct answer.
How may an inequality be resolved?When resolving an inequality, you can do one of the following: · Add a same number to each side; • Subtract the same amount from each side; • Multiply or divide either aspect by the exact positive amount. You must flip the inequality sign if you combine or split each end by a negative number.
According to the values x = -3, y = 1
-3 + 1 = -2, which is less than or equal to -2, so the first inequality is true.
2 * -3 - 3 * 1 = -9, which is less than or equal to -9, so the second inequality is also true.
Since both inequalities are true, (-3, 1) is a solution for the system of inequalities x + y ≤ -2 and 2x - 3y ≤ -9.
we get ,
x + y ≤ -2
2x - 3y ≤ -9
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The Complete Question :
For which system of inequalities is (-3, 1) a solution?
A. x+y<-2 and 2x-3y <-9
B. x+y<-2 and 2x-3y <-9
C. x+y≤-2 and 2x-3y <-9
D. x+y≤-2 and 2x-3y ≤-9
Find the amount in a continuously compounded account for the following condition.
Principal, $3000; Annual interest rate, 5.5%; time, 3 years
The balance after 3 years is $___
(Round the final answer to the nearest cent as needed. Round all intermediate values to five decimal places as needed.)
Answer:
9300$
Step-by-step explanation:
The numerical value of the standard deviation can never be:
Zero
Negative
Larger than the variance
Which of the following statements is true:
a. (i) & (ii)
b. (ii) & (iii)
c. (i), (ii) & (iii)
d. None of the above
The numerical value of the standard deviation is never (B) less than the variance and is never negative.
What is the standard deviation?The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers.
While a high standard deviation suggests that the values are dispersed over a wider range, a low standard deviation suggests that the values tend to be close to the mean (also known as the anticipated value) of the collection.
The standard deviation's numerical value is always greater than the variance and can never be negative.
The lowercase Greek letter (sigma), for the population standard deviation, or the Latin symbol s, for the sample standard deviation, are most frequently used in mathematical texts and equations to indicate standard deviation.
Standard deviation may be written as SD.
Therefore, the numerical value of the standard deviation is never (B) less than the variance and is never negative.
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A print of a famous painting is 1/3 the size of the original if the original is 9 feet long how long is the print
The print size of the painting is 3 ft long.
What is scale factor?A scale factor is defined as the ratio between the scale of a given original object and a new object, which is its representation but of a different size.
Given that, a print of a famous painting is 1/3 the size of the original, the original is 9 feet long, we need to find the length of the print.
Let the print size of the painting be x ft long,
Since, the scale factor is 1/3
Therefore,
1/3 = 9/x
x = 9/3
x = 3
Hence, the print size of the painting is 3 ft long.
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a package of aluminum foil contains 50. ft2 of foil, which weighs approximately 9.0 oz . what is the approximate thickness of the foil in millimeters?
The approximate thickness of the package of aluminum foil with given density and weight is equal to 0.002 millimeters.
1 ft = 30.48 cm
Area of aluminum foil = 50 ft²
= 50 × ( 30.48 )² cm²
= 46451.52 cm²
1 oz = 28.3495 grams
Weight of the aluminum = 9.0 oz
= 255.1455 grams
Density = 2.70 g/cm³
Density = weight / ( area × thickness )
⇒ Thickness = weight / ( area × density )
⇒Thickness = 255.1455 grams / ( 46451.52 cm² × 2.70 g/cm³ )
⇒Thickness = 0.00203
⇒Thickness = 0.002 millimeters
Therefore, approximate thickness of the aluminum foil is equal to 0.002 millimeters.
The above question is incomplete, the complete question is:
A package of aluminum foil contains 50. ft2 of foil, which weighs approximately 9.0 oz . Aluminum has a density of 2.70 g/cm3.What is the approximate thickness of the foil in millimeters?
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Use your knowledge of special tight triangles to find the missing side lengths and angle measures exactly. No calculators are needed. You can leave everything in radical form.
9.42 m and 3 m are the missing lengths. 30 degrees is the missing angle.
What is triangle?A triangle is a three-sided polygon that is sometimes (but not always) referred to as the trigon. Every triangle has three sides and three angles, which may or may not be the same. A triangle is a three-sided polygon with three edges and three vertices in geometry. The total of a triangle's interior angles equals 180 degrees, which is its most essential feature. This is known as the angle sum property of a triangle. This figure is two-dimensional and has three straight sides. A triangle is a three-sided polygon. A triangle's three angles added together equals 180°. A single plane contains the triangle.
Here,
sin 60=p/h
√3/2=p/6
p=3√3 m
cos 60=b/h
1/2=b/6
b=3 m
90+60+x=180
x=30 degrees
The missing lengths are 9.42 m and 3 m. The missing angle is 30 degrees.
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In the diagram below,
F
G
‾
FG
is parallel to
C
D
‾
CD
. If
C
D
‾
CD
is twice the length of
F
E
‾
FE
,
C
E
=
12
CE=12, and
F
G
=
6
FG=6, find the length of
F
E
‾
FE
. Figures are not necessarily drawn to scale. State your answer in simplest radical form, if necessary.
The value of the segment FE for the similar triangles is equal to 6.
How to calculate for FE for the similar trianglesThe triangles EFG and ECD are similar, this implies that the length FE of the smaller triangle is similar to the length CE of the larger triangle
and the length FG of the smaller triangle is similar to the length CD of the larger triangle
so;
FE/12= 6/2FE
2(FE)² = 12 × 6 {cross multiplication}
2(FE)² = 72
(FE)² = 72/2
(FE)² = 36
FE = √36 {take square root of both sides}
FE = 6.
Therefore, the value of the segment FE for the similar triangles is equal to 6.
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the probability of tails of a weighted coin is 0.65. the number of tails is noted each of the 15 times the coin is tossed. if this procedure is repeated 100 times, what type of distribution is simulated?
Sampling distribution type distribution is simulated with the sample proportion with n = 15 and p = 0.65.
It is defined as a probability distribution of a statistic that is from a larger number of samples from a specific population.
We are given that
The probability of tails of a weighted coin, p=0.65 and n=15
We have to find the type of distribution that is simulated if this procedure is repeated 100 times.
The random variable is a proportion of a number of tails therefore, the type of distribution is the sampling distribution of the sample proportion.
Probability is something that is to happen.
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a certain town of population size 100,000 has three newspapers: i, ii, and iii. the proportions of townspeople that read these papers are: i: 10%, i and ii: 8%, i and ii and iii: 1%, ii: 30%, i and iii: 2%, iii: 5%, ii and iii: 4%. (note that, for example, the 10% of people who read newspaper i might read only i or might read i and some other paper(s) ). a) find the number of people who read only one newspaper. b) how many people read at least two newspapers?
A. The number of people who read only one newspaper is 45,000
B. The number of people who read at least two newspapers is 15,000.
How did we get the values?a) 10% of 100,000 people read only newspaper i, 30% of 100,000 people read only newspaper ii, and 5% of 100,000 people read only newspaper iii.
10% of 100,000 = 10,000
30% of 100,000 = 30,000
5% of 100,000 = 5,000
Therefore, the number of people who read only one newspaper is 45,000.
b) 8% of 100,000 people read both newspaper i and ii, 1% of 100,000 people read all three newspapers, 2% of 100,000 people read both newspaper i and iii, and 4% of 100,000 people read both newspaper ii and iii.
8% of 100,000 = 8,000
1% of 100,000 = 1,000
2% of 100,000 = 2,000
4% of 100,000 = 4,000
Therefore, the number of people who read at least two newspapers is 15,000.
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Michael is 3 times as old as Brandon. 18 years ago, Michael was 9 times as old as Brandon.
How old is Michael now?
Currently, Michael is 72 years old
How old is Michael now?Let's represent Michael's current age as "x".
Then Brandon's current age is x/3.
18 years ago, Michael's age was x-18
Brandon's age was x/3-18.
18 years ago, we can write the equation:
x - 18 = 9 * (x/3 - 18)
So, we have
x - 18 = 3x - 162
Evaluate the like terms
2x = 144
Divide by 2
x = 72
So, Michael is 72 years old now.
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Condense the logarithm
log c + z log q
The condensed logarithm is given as follows:
log(cq^z).
How to obtain the condensed logarithm?The logarithmic expression for this problem is defined as follows:
log c + z log q
For the multiplication/power rule, we have that:
z log q = log q^z.
Hence the expression would be simplified as follows:
log c + q^z.
The addition of logarithms can also be represented as the logarithm of the product, hence the condensed logarithm is given as follows:
log c + q^z = log(cq^z).
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luis strength trains two times per week. he uses 12-pound weights and performs three sets of eight repetitions. he wants to improve his frequency. what should he do?
If Luis trains two times per week with 12-pound weights , then to improve his strength, he should (d) Increase to three times per week.
By Increasing the frequency of his strength training sessions from two times per week to three times per week can help Luis improve his strength by exposing his muscles to more stimulation and allowing for more adaptations to occur.
It is important to remember to progress gradually and listen to his body to avoid injury.
The option (d) ; involves increasing the frequency of his strength training sessions from two times per week to three times per week. By exposing his muscles to more stimulation, he will be allowing for more adaptations to occur and potentially leading to greater strength gains.
The given question is incomplete , the complete question is
Luis strength trains two times per week. He uses 12-pound weights and performs three sets of eight repetitions. He wants to improve his frequency. What should he do?
(a) Increase to 10 repetitions.
(b) Increase to 15-pound weights.
(c) Increase to four sets.
(d) Increase to three times per week.
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Find the mean absolute deviation for the set below 108, 53, 47, 22, 56, 62
Answer: The mean absolute deviation for the given data set is 19.
Step-by-step explanation:
The mean absolute deviation (MAD) is a measure of the variability of a set of data and is defined as the average of the absolute deviations of each data point from the mean. To find the MAD, we first need to find the mean of the data set, and then subtract each data point from the mean and take the absolute value of the result.
Here is the step-by-step process for finding the MAD for the given data set:
Find the mean of the data set: (108 + 53 + 47 + 22 + 56 + 62) / 6 = 56
Subtract the mean from each data point:
108 - 56 = 52
53 - 56 = -3
47 - 56 = -9
22 - 56 = -34
56 - 56 = 0
62 - 56 = 6
Take the absolute value of each result:
|52| = 52
|-3| = 3
|-9| = 9
|-34| = 34
|0| = 0
|6| = 6
Find the average of the absolute deviations: (52 + 3 + 9 + 34 + 0 + 6) / 6 = 19
So the mean absolute deviation for the given data set is 19.