The rates of return on 7 natural resources mutual funds are given below: 14.77 15.04 16.95 18.07 14.83 15.69 17.85 Suppose that the rates are approximately normal. (a) Compute the mean and the standard deviation funds. Round your answer to three decimal places. (b) Calculate the lower confidence limite and the upper confidence limite of the 99% confidence interval for u, the mean rate of return of natural resources mutual funds. Round your answer to three decimal places. rate of return of natural resources mutual

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