Repeat Exercise 4-15 using a sample size of n = 16 and the same critical region.
A textile fiber manufacturer is investigating a new drapery yarn, which has a standard deviation of 0.3 kg. The company wishes to test the hypothesis H0: µ = 14 against H1: µ
(a) What is the P-value if the sample average is
(b) Find for the case where the true mean elongation force is 13.5 kg and we assume that α = 0.05.
(c) What is the power of the test from part (b)?