H13

Points: U of b Suppose that you are testing the hypotheses Ho: H = 16 vs. HA: H

Suppose that you are testing the hypotheses Ho: = 16 vs. I-IA : < 16. A sample of size 25 results in a sample mean of 16.5 and a sample standard deviation of 2.1. a) What is the standard error of the mean? b) What is the critical value of for a 90% confidence interval? c) Construct a 90% confidence interval for g. d) Based on the confidence interval, at = 0.05 can you reject Ho? Explain. a) The standard error of the mean is 0.42