10, 5, 9, 10, 11, 6, 8, 6, 8, 5, 9, 9, 7, 10, 8, 5, 12
Amounts are normally distributed. Find a 95% confidence interval for the mean.
Round Intermediate computations three decimal places. Round answers 1 decimal place.
What is the lower limit of the confidence interval?
What is the upper limit of the confidence interval?