defazajx

2020-11-27

According to one study, brain weights of men are normally distributed with a mean of 1.20kg and a standard deviation of 0.13kg. Use the data to answer questions (a) through (e).
a. Determine the sampling distribution of the sample mean for samples of size 3.
The mean of the sample mean is $\mu x=?$
The standard deviation of the sample mean is $\sigma x=?$
(Round to four decimal places as needed.)
b. Determine the sampling distribution of the sample mean for samples of size 12.
The mean of the sample mean is $\mu x=?$
The standard deviation of the sample mean is $\sigma x=?$
(Round to four decimal places as needed.)

lamanocornudaW

Skilled2020-11-28Added 85 answers

Given:

a) Given:

The mean of the sample mean is

The standard deviation of the sample mean is

b) Given:

The mean of the sample mean is

The standard deviation of the sample mean is

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