Question

please answer 22, thanks

21. Consider a university with a population mean GPA of 2.95, a standard deviation of .2, and a sampling distribution of all possible samples of size 100. The mean of the sample means is equal to: a) 245b) 2 .02 2.95 e) .025 Same as above, the standard deviation of the sample means is equal to: a)2.45 22. b) .2 d) 2.95 e) .025

Answer 1

Question 21)

Sample mean = Population mean = 2.95

Option d) is correct.

Question 22)

the standard deviation of sample mean

$=\frac{\sigma }{\sqrt{n}}$

$=\frac{0.2 }{\sqrt{100}}$

=0.02

Option ) is correct.