Author Question: In developing an interval estimate for a population mean, the population standard deviation was ... (Read 89 times)

c0205847 · **on:** Jun 24, 2018

In developing an interval estimate for a population mean, the population standard deviation was assumed to be 10 . The interval estimate was 50.92 2.14 . Had equaled 20, the interval estimate would be
a. 60.92 2.14
b. 50.92 12.14
c. 101.84 4.28
d. 50.92 4.28

Question 2

A multiple regression analysis involving three independent variables and 25 data points results in a value of 0.769 for the unadjusted coefficient of determination. Then, the adjusted coefficient of determination is:
a. 0.385 c. 0.591
b. 0.877 d. 0.736