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Question $7$

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 $0\mathrm{.}60$

and the sample standard deviation of the ratio is $0\mathrm{.}40.$ The analyst can state with a $90\%$ Gonfidence that the mean Sharpe ratio will not be greater than:

$0\mathrm{.}70528$

$0\mathrm{.}70544$

$0\mathrm{.}73664$

$0\mathrm{.}73688$