Suppose that you are testing the hypotheses Ho: u = 14 vs. HA: J

Suppose that you are testing the hypotheses Ho: g = 14 vs. HA: g < 14. A sample of size 64 results in a sample mean of 14.5 and a sample standard deviation of 2.5. a) What is the standard error of the mean? b) What is the critical value of t* for a 90% confidence interval? c) Construct a 90% confidence interval for g. d) Based on the confidence interval, at ot = 0.05 can you reject Ho? Explain.