Author Question: Random samples of size 81 are taken from an infinite population whose mean and standard deviation ... (Read 209 times)

itsmyluck · **on:** Jun 24, 2018

Random samples of size 81 are taken from an infinite population whose mean and standard deviation are 45 and 9, respectively. The mean and standard error of the sampling distribution of the sample mean are:
a. 45 and 9 c. 45 and 9/81
b. 45/81 and 9/81 d. 45/81 and 9/81

Question 2

The coefficient of determination is equal to the coefficient of correlation squared.
Indicate whether the statement is true or false