A Question 10 (6 points) Retake question Consider the following hypotheses: : = 50 HA : # 50 A sample of 16 observations yields a sample mean of 46. Assume that the sample is drawn form a normal population with a sample standard deviation of 10. A. Calculate the value of the test statistics. B. At the 5% confidence level, does the population mean differ from 50? In the box, put "yes" or "no".