The distance between points A(1, -4) and B(x, -2) is \(\sqrt{5\beta }\) units. Find x.

The true statement among the options is (C) A sampling distribution is the distribution of a statistic calculated from all possible samples of the same size from the same population.

Option (A) is incorrect because a parameter describes a characteristic of a population, not a sample. Option (B) is incorrect because an unbiased estimator is a statistic that produces an estimate that is, on average, equal to the true value of the parameter being estimated. It is not related to the method of sampling. Option (D) is incorrect because the variability of a population distribution does not depend on the sample size. Option (E) is incorrect because the normal approximation can only be used for the sampling distribution if the population is normally distributed or if the sample size is large enough to satisfy the central limit theorem, which typically requires a sample size greater than 30 for moderate to large variability.
C) A sampling distribution is the distribution of a statistic calculated from all possible samples of the same size from the same population.

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Answer:

hope it will help uh.....

Answer:

I think that the answer would be y=18x−127

The centroid of the region bounded by the given curves. y = x8, x = y8 (x, y) is (0.476470, 0.476470).

The points of the centroid are calculated by,

x= 1/A int(x(f(x))dx)

y= 1/2A int(f(x)² dx)

where A is the area the made by the bounded region,

since the bounded region is from 0 to 1 (the curves intersect at 0 and 1),

A = int 0 → 1 ((x⅛-x⁸)dx)

= [ (8/9)x^(9/8) - x⁹/9 ]0→1

= 8/9 - 1/9

= 7/9

now,

x coordinate = 1/(7/9) int 0 → 1 (x(x⅛-x⁸)dx)

=9/7 [(8/17)x^(17/8)-(1/10)x¹⁰]0 → 1

= 9/7[(8/17)-(1/10)]

=9/7[0.370588]

=0.476470

y coordinate = 1/2(7/9) int 0 → 1 (x⅛-x⁸)(x⅛+x⁸) dx

=1/2(7/9) int 0 → 1 (x⅛-x⁸)(x¼-x¹⁶) dx

which after calculation will come the same as 0.476470

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Answer:

1, and that is 27

Step-by-step explanation:

4(x-5)=3x+7

4x-20=3x+7

4x-3x-20-7=0

x-27=0

x=27

Answer:

10000000.9

Step-by-step explanation:

Answer:

W(0,-4)

Step-by-step explanation:

By translating right, we add the translation unit to the given coordinate of the x-axis

By translating downwards, we have to subtract the translation unit from the given coordinate of the y-axis

So from what we have here;

We are going to add 5 to the x-axis value and subtract 9 from the y-axis value

Thus, we have it that;

W’ (-5 + 5, 5 -9)

W’ (0,-4)

Step-by-step explanation:

you need to send the questions sheet

Answer:

1 that's your answer I hope I get it correct

Answer:

1:165

Step-by-step explanation:

I tr8ed my best if its not r8ght sorry

Answer:

100 : 165 or 1 : 1.65

Step-by-step explanation:

1 meter is equal to 100 centimeters (cm), knowing this the ratio between her and her teacher would be 100 to 165 (100:165)

165 centimeters is equal to 1 meter 65 centimers (165/100)

this yields the ratio of 1:1.65

Answer:

3: C 4:C 5:D

Step-by-step explanation:

The approximate number of students with Scores between 68 and 83 is 98.Answer: a. 98

The five-number summary for scores on a statistics exam is: 35, 68, 77, 83 and 97. In all, 196 students took this exam About how many students had scores between 68 and 83?

The five-number summary consists of the minimum value, the first quartile, the median, the third quartile, and the maximum value.

The interquartile range is the difference between the third and first quartiles. Interquartile range (IQR) = Q3 – Q1, where Q3 is the third quartile and Q1 is the first quartile. The 5-number summary for scores on a statistics exam is given below:

Minimum value = 35

First quartile Q1 = 68

Median = 77

Third quartile Q3 = 83

Maximum value = 97

The interval 68–83 is the range between Q1 and Q3.

Thus, it is the interquartile range.

The interquartile range is calculated as follows:IQR = Q3 – Q1 = 83 – 68 = 15

The interquartile range of the scores between 68 and 83 is 15. Therefore, the number of students with scores between 68 and 83 is roughly half of the total number of students. 196/2 = 98.

Thus, the approximate number of students with scores between 68 and 83 is 98.Answer: a. 98

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To show that the matrix A = [XX - X'Z(ZZ)^(-1)Z'X] is positive definite, we need to demonstrate two properties: (1) A is symmetric, and (2) all eigenvalues of A are positive.

Symmetry: To show that A is symmetric, we need to prove that A' = A, where A' represents the transpose of A. Taking the transpose of A: A' = [XX - X'Z(ZZ)^(-1)Z'X]'. Using the properties of matrix transpose, we have:

A' = (XX)' - [X'Z(ZZ)^(-1)Z'X]'. The transpose of a sum of matrices is equal to the sum of their transposes, and the transpose of a product of matrices is equal to the product of their transposes in reverse order. Applying these properties, we get: A' = X'X - (X'Z(ZZ)^(-1)Z'X)'.  The transpose of a transpose is equal to the original matrix, so: A' = X'X - X'Z(ZZ)^(-1)Z'X. Comparing this with the original matrix A, we can see that A' = A, which confirms that A is symmetric.  Positive eigenvalues: To show that all eigenvalues of A are positive, we need to demonstrate that for any non-zero vector v, v'Av > 0, where v' represents the transpose of v. Considering the expression v'Av: v'Av = v'[XX - X'Z(ZZ)^(-1)Z'X]v

Expanding the expression using matrix multiplication : v'Av = v'X'Xv - v'X'Z(ZZ)^(-1)Z'Xv. Since X and Z have full column rank, X'X and ZZ' are positive definite matrices. Additionally, (ZZ)^(-1) is also positive definite. Thus, we can conclude that the second term in the expression, v'X'Z(ZZ)^(-1)Z'Xv, is positive definite.Therefore, v'Av = v'X'Xv - v'X'Z(ZZ)^(-1)Z'Xv > 0 for any non-zero vector v. Implications in econometrics: In econometrics, positive definiteness of a matrix has important implications. In particular, the positive definiteness of the matrix [XX - X'Z(ZZ)^(-1)Z'X] guarantees that it is invertible and plays a crucial role in statistical inference.

When conducting econometric analysis, this positive definiteness implies that the estimator associated with X and Z is consistent, efficient, and unbiased. It ensures that the estimated coefficients and their standard errors are well-defined and meaningful in econometric models. Furthermore, positive definiteness of the matrix helps in verifying the assumptions of econometric models, such as the assumption of non-multicollinearity among the regressors. It also ensures that the estimators are stable and robust to perturbations in the data. Overall, the positive definiteness of the matrix [XX - X'Z(ZZ)^(-1)Z'X] provides theoretical and practical foundations for reliable and valid statistical inference in econometrics.

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Answer: It could be, just add two dots at the smiley face, BOOM! The function of Facial muscles in humans.

Step-by-step explanation:

Answer:

x≤9

Step-by-step explanation:

x−6≤3

Add 6 to both sides.

x≤3+6

Add 3 and 6 to get 9

x≤9

Answer: x ≤ 9

Step-by-step explanation: When solving an inequality, your goal is the same as it would be if you were solving an equation – to get the variable by itself or isolated on one side of the equals sign.

Since 6 is being subtracted from x, add 6 to both sides of the inequality.

On the left, the -6 +6 cancel out and on the right, 3 + 6 is 9.

So we have x ≤ 9.

Based on the characteristics of the distribution, the probability that the first goal is scored in less than 4 minutes is 0.

For us to be able to calculate the probability that the first goal is scored in less than 4 minutes, the distribution needs to satisfy the requirements of the Central Limit Theorem(CLT).

Based on the fact that the distribution here is extremely right skewed, then it does not satisfy the requirements of CLT so the probability is 0.

First part of question:

The distribution of the time it takes for the first goal to be scored in a hockey game is known to be extremely right skewed with population mean 12 minutes and population standard deviation 8 minutes.

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Answer:

Divide the tax rate by 100. A tax of 7.5 percent was added to the product to make it equal to 118.25. So, divide 7.5 by 100 to get 0.075.

Answer:

$8.25

Step-by-step explanation:

To find the tax on $110, find 7.5% of 110.

Let x be 7.5% of 110.

\( \frac{7.5}{100} = \frac{x}{110} \)

\(110 \times 7.5 = 100x\)

\(825 = 100x\)

\(8.25 = x\)

7.5% of 110 is $8.25. The tax on $110 is $8.25.

Angle is mistaken because triangles of two pairs of congruent sides and one pair of congruent angles do not always satisfy the SAS criterion.

In the given situation:

Therefore, the angle is mistaken because triangles of two pairs of congruent sides and one pair of congruent angles do not always satisfy the SAS criterion.

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Step-by-step explanation:

2524 ÷ 23 = 24a6u= 7

bengek hyung

The cost of one banana will be 46 cents. We find it by solving the linear equation.

Given,

The number of apples = 4.

The number of Bananas = 5.

The total cost of apples and bananas = 3.70.

Let, the cost of an apple is 'a'.

Let, the cost of an apple is 'b'.

The equation will be, 4a + 5b = 3.70.

The cost of one apple is given as 35 cents.

Now, we have to find the cost of one banana.

By substituting, we get

4(0.35) + 5b = 3.70.

1.40 + 5b = 3.70.

5b = 2.30

b = 0.46.

Therefore, the cost of one banana is 46 cents.

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The complete question could be as follows:

Luke buys 4 apples and 5 bananas at a total cost 0f $3.70. If the cost of one apple is 35 cents, find the cost of one banana.

Answer:

(4x - 5)(x + 2).

Step-by-step explanation:

4x^2 + 3x - 10

4 * 10 = -40

We need 2 numbers whose product is -40 and whose sum is +3.

Theses are = - 5 and + 8.

So we write:

4x^2 + 8x + -5x - 10

= 4x(x + 2) - 5(x + 2)

= (4x - 5)(x + 2).

Answer:

0.05, 0.2, 0.6, 0.48 I think

Answer:

0.05,0.2.0.60,0.48

Step-by-step explanation:

hope it helps ... kinda confused betwweeen 0.6 and 0.48

Answer:

1)B

2)B

3)D

4)D

5)D

6)A

7)A

8)C

The equation of the line in the slope-intercept form will be y = 3x + 1.

An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.

Given that a line has a slope of 3 that passes through the point (-2,-5).

The equation of the line in slope-intercept form is,

y = mx + c

y = 3x + c

Put the value of x and y in the equation.

y = 3x + c

-5 = 3x-2 + c

-5 = -6 + c

c = 1

The equation will be written as:-

y = 3x + 1

Therefore, the equation of the line in the slope-intercept form will be y = 3x + 1.

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a. The chart did not maintain consistent scaling

b. The graph is not the appropriate graph type to display such data

c.  The display had inaccurate or distorted visual representations

When the actual data may not support it, changing the scales on the axes might give the appearance of big changes or differences.

The visual effect of data can be exaggerated or minimized, for instance, by adopting a non-linear scale or deleting specific sections of the axis.

So it important to Choose appropriate graph type that best represents the data and the relationship you want to convey.

It also advisable to make use of  clear and accurate labeling with descriptive titles and units of measurement.

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Answer:

5x - 26

Step-by-step explanation:

9 - 5(-11x + 7)

= 9 - (-55x + 35)

= 9+ 5x - 35

= (9 - 35) + 5x

= -26 + 5x

= 5x - 26

Answer:

it is -3/15

Step-by-step explanation:/ im not good at explning it

Answer:

\(-\frac{4}{15}\)

Step-by-step explanation:

\(-\frac{3}{5} +\frac{1}{3}\\\\ \text{LCM 5,3: 15}\\\\\frac{-3}{5}=\frac{-9}{15}\\\\\frac{1}{3}=\frac{5}{15}\\\\\\\frac{-9}{15}+\frac{3}{15}=\frac{-9+5}{15}=\boxed{-\frac{4}{15}}\)

Hope this helps.

Answer:

  $4.80

Step-by-step explanation:

You want to know the finance charge on a balance of $480 if the APR is 12%.

The monthly finance charge is the product of the monthly interest rate and the balance. The monthly interest rate is 1/12 of the annual rate.

  finance charge = (1/12 · 12%) · $480 = 0.01 · $480 = $4.80

The finance charge on the next monthly statement is $4.80.

To expand the expression log3 3x7 y using the laws of logarithms, we can use the following rule:
loga (mn) = loga m + loga n

This means that the logarithm of the product of two numbers is equal to the sum of the logarithms of those numbers. Applying this rule to our expression, we get:
log3 3x7 y = log3 3 + log3 x7 + log3 y
Since log3 3 = 1 (because 3 to the power of 1 is 3), we can simplify this expression further:
log3 3x7 y = 1 + log3 x7 + log3 y
So the expanded expression is 1 + log3 x7 + log3 y. I hope that helps! Let me know if you have any other questions.
Given the expression log3(3x^7y), we can apply the following rules:
1. Product Rule: log(a * b) = log(a) + log(b)
2. Power Rule: log(a^b) = b * log(a)
Applying these rules, we get:
log3(3x^7y) = log3(3) + log3(x^7) + log3(y)
Now, we apply the power rule to the term log3(x^7):
log3(3) + 7 * log3(x) + log3(y)
Since log3(3) is equal to 1 (as 3 raised to the power of 1 equals 3), the expanded expression is:
1 + 7 * log3(x) + log3(y)
This is the final expanded form of the given expression using the laws of logarithms.

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The 95% tolerance limits that contain 95% of the diameters is 2.262

Diameter:

In math, the straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end is known as diameter.

Given,

Here we need to find the 95% tolerance limits that contain 95% of the diameters estimation of the mean diameter, while important, is not nearly as important as trying to pin down the location of the majority of the distribution of diameters.

According to the given question we have identified the following values,

Tolerance percentage = 95%

Diameter percentage = 95%

x = 61,492

n = 10

s = 3035

c = 95% = 0.95

Now, the value of t is determine by looking in the row starting with degrees of freedom 

=> df = n−1 = 10−1 = 9 and in the column with 

=> α/2 = (1−c)/2

=>0.025 

Then as per the table of the Student’s T distribution:

=> tα​=2.262

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Direct labor efficiency variance = $6,100 F.

Given that

Standard labor-hours per unit of output     8.5 hours

Standard labor rate                                     $12.30 per hour

Standard labor hours allowed                          6,800 hours (800 units *                                         8.5 hours allowed)

The following data pertain to operations concerning the product for the last month:

Actual hours worked  6,300 hours

Actual total labor cost  $74,970

Actual output                  800 units

We can determine the labor efficiency variance using the following equation:

1. Direct labor efficiency variance = (Standard hours allowed - Actual labor hours) * Standard rate

2. Direct labor efficiency variance = (6,800 hours - 6,300 hours) * $12.20

3. Direct labor efficiency variance = $6,100 F

The variance is favorable as the actual labor hours used are less than the standard hours allowed.

Hence the answer is Direct labor efficiency variance = $6,100 F.

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