Mrs. Lakshmi

A random sample of size 20 from a normal population will sample mean 42 and sample standard deviation of 6 . To test the hypothesis the population mean 44 at 5% level of significance , find the p-value and comment

QNT 561: I want the Statistics question problems for chapter 3 and chapter 5 from the book "Statistical techniques in business and Economics" by Lind, Marchel and Wathen. Can somebody give the questions? Thanks.

From the standard normal table find the probability value for Z=1.25, We know that the normal distribution is symmetric and hence area from 0 to 1.25 and area from -1.25 is the same. For the area to the right of -1.25 we add 0.5, which is the right symmet...