A certain brokerage house wants to estimate the mean daily return on a certain stock. A random sample of 19 days yields the following return percentages. -2.4, -2.64, 0.75, 1.96, 0.25, -2.17, 1.74, 2.59, 2.97,-0.86, -2.55, -0.72, -1.33, -0.95, -1.73, 2.49, 0.82, 0.15, -2.18 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: Upper limit: X S

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