#13

Question # 13 A sample mean, sample size, and population standard deviation are given. Use the one-mean z-test to perform the required hypothesis test at the given significance level. Use the critical -value approach. x = 25, n = 40, Standard deviation= 1.5, Ho: H = 22; Ha: H 22, alpha= 0.05 A) z = 12.65; critical values = +1.645; reject Ho B) z = 12.65; critical values = +1.96; do not reject Ho C) z = 12.65; critical values = $1.645; do not reject Ho D) z = 12.65; critical values = +1.96; reject Ho