A certain brokerage house wants to estimate the mean daily return on a certain stock. A random sample of IU days yields the following return percentages. 1.63, -0.23, 0.14, 1.77, -1.04, -2.99, - 1.98, 2.13, 1.18, - 1.68 Send data to calculator Send data to Excel If we assume that the returns are normally distributed, find a 90% confidence interval for the mean daily return on this stock. Give the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: X ? Upper limit