could you answer below

An analyst calculates the mean Sharpe ratio of 25 U.S. equity mutual funds for which the population variance is unknown. The sample mean is 0.60 and the sample standard deviation of the ratio is 0.40. The analyst can state with a 90% confidence that the mean Sharpe ratio will not be greater than: 0.705280.705440.736640.73688 QUESTION 2 An analyst would like to identify the 95% confidence interval of returns around the mean for a normally distributed sample of 29 U.S. private equity firms for which population variance is known. What is the reliability factor used to construct the confidence interval? 1.650 1.701 1.960 2.048