Calculate the single-sided upper bounded 90% confidence interval for the population mean (mu) given that a sample of size n=15 yields a sample mean of 17.24 and a sample standard deviation of 2.33. Your answer: mu < 18.59 mu < 17.28 O mu < 17.51 mu < 17.92 mu < 17.68 mu < 18.35 mu < 17.57 O mu < 18.05 mu < 17.60 mu < 17.94