QuestionAssume that a sample is used to estimate a population mean $\mu$. Find the $80 \%$ confidence interval for a sample of size 41 with a mean of 38.5 and a standard deviation of 18.5. Enter your answer as an openinterval (i.e., parentheses) accurate to 3 decimal places.
80\% C.I. = $\square$ The answer should be obtained without any preliminary rounding.