#14

14. A sample mean; sample size. and population standard deviation are given. Use the one-mean ztest to perform the required hypothesis test at the given signicance level. Use the critical -value approach. )1 = 25; n = 40; Standard deviation: 1.5, H0: u = 22; Ha: u 22, alpha= 0.05 A) z = 12.65; critical values = i1 .645; reject H0 B) z = 12.65; critical values = 1.96; do not reject H0 C) a = 12.65; critical values = H.645; do not reject H0 D) 2 = 12.65; critical values = i136; reject H0