Data on salaries in the public school system are published annually by a teachers' association. The mean annual salary of (public) classroom teachers is $53.6 thousand. Assume a standard deviation of $7.2 thousand. Complete parts (a) through (e) below. a. Determine the sampling distribution of the sample mean for samples of size 64. The mean of the sample mean is μ = $. (Type an integer or a decimal. Do not round.) The standard deviation of the sample mean is o=$. (Type an integer or a decimal. Do not round.) b. Determine the sampling distribution of the sample mean for samples of size 256.
Data on salaries in the public school system are published annually by a teachers' association. The mean annual salary of (public) classroom teachers is $53.6 thousand. Assume a standard deviation of $7.2 thousand. Complete parts (a) through (e) below. a. Determine the sampling distribution of the sample mean for samples of size 64. The mean of the sample mean is μ = $. (Type an integer or a decimal. Do not round.) The standard deviation of the sample mean is o=$. (Type an integer or a decimal. Do not round.) b. Determine the sampling distribution of the sample mean for samples of size 256.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Transcribed Image Text:Data on salaries in the public school system are published annually by a teachers' association. The mean annual salary of (public) classroom
teachers is $53.6 thousand. Assume a standard deviation of $7.2 thousand. Complete parts (a) through (e) below.
...
b. Determine the sampling distribution of the sample mean for samples of size 256.
The mean of the sample mean is μ = $. (Type an integer or a decimal. Do not round.)
The standard deviation of the sample mean is ox = $
(Type an integer or a decimal. Do not round.)
c. Do you need to assume that classroom teacher salaries are normally distributed to answer parts (a) and (b)? Explain your answer.

Transcribed Image Text:Data on salaries in the public school system are published annually by a teachers' association. The mean annual salary of (public) classroom
teachers is $53.6 thousand. Assume a standard deviation of $7.2 thousand. Complete parts (a) through (e) below.
a. Determine the sampling distribution of the sample mean for samples of size 64.
The mean of the sample mean is μ = $. (Type an integer or a decimal. Do not round.)
The standard deviation of the sample mean is o =$. (Type an integer or a decimal. Do not round.)
b. Determine the sampling distribution of the sample mean for samples of size 256.
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