Question
A variable of a population has a mean of =78 and a standard deviation of =24. a. Identify the sampling distribution of the sample mean
A variable of a population has a mean of
=78
and a standard deviation of
=24.
a. Identify the sampling distribution of the sample mean for samples of size
36.
b. In answering part (a), what assumptions did you make about the distribution of the variable?
c. Can you answer part (a) if the sample size is
25
instead of
36?
Why or why not?
a. What is the shape of the sampling distribution?
normal
uniform
skewed
bimodal
What is the mean of the sampling distribution?
x=enter your response here
(Simplify your answer.)
What is the standard deviation of the sampling distribution?
x=enter your response here
(Simplify your answer.)
b. In answering part (a), what assumptions did you make about the distribution of the variable?
A.
It was assumed that the distribution of the variable was unimodal.
B.
It was assumed that the variable was normally distributed.
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