The annual salary for one particular occupation is normally​ distributed, with a mean of about ​$120,000 and a standard deviation of about ​$20,000. Random samples of 44 are drawn from this​ population, and the mean of each sample is determined. Find the mean and standard deviation of the sampling distribution of these sample means.​ Then, sketch a graph of the sampling distribution.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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The annual salary for one particular occupation is normally​ distributed, with a mean of about ​$120,000 and a standard deviation of about ​$20,000.

Random samples of 44 are drawn from this​ population, and the mean of each sample is determined. Find the mean and standard deviation of the sampling distribution of these sample means.​ Then, sketch a graph of the sampling distribution.

The mean is
and the standard deviation is o- =
%3D
(Round to the nearest integer as needed. Do not include the $ symbol in your answers.)
Sketch a graph of the sampling distribution. Choose the correct answer below.
A.
В.
C.
D.
A A AA
110,000 120,000 130,000
Mean salary (in dollars)
16,691
19,491
18,091
Mean salary (in dollars)
8,091
28,091
60,000 120,000 180,000
Mean salary (in dollars)
18,091
Mean salary (in dollars)
Transcribed Image Text:The mean is and the standard deviation is o- = %3D (Round to the nearest integer as needed. Do not include the $ symbol in your answers.) Sketch a graph of the sampling distribution. Choose the correct answer below. A. В. C. D. A A AA 110,000 120,000 130,000 Mean salary (in dollars) 16,691 19,491 18,091 Mean salary (in dollars) 8,091 28,091 60,000 120,000 180,000 Mean salary (in dollars) 18,091 Mean salary (in dollars)
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