A certain brokerage house wants to estimate the mean daily return on a certain stock. A random sample of 20 days yields the following return percentages. 1.09, -1.09, –0.14,-0.03, 1.76,-1.59,-1.46 , 2.13 , 1.96, 2.01,-0.91,0.64,-2.41, 1.81, -0.25, -0.46,0.37, -0.21, 1.39, 0.68 Send data to calculator Send data to Excel If we assume that the returns are normally distributed, find a 95% confidence interval for the mean daily return on this stock. Then find the lower limit and upper limit of the 95% 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:

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