Question: A random sample 11 days yields the following return percentages. 2.15 , -0.91, -0.27 , -2.81 , -1.42, 2.76, 2.46, -0.35, 0.16 , -2.36 ,

A random sample 11 days yields the following return percentages. 2.15 , -0.91, -0.27 , -2.81 , -1.42, 2.76, 2.46, -0.35, 0.16 , -2.36 , 2.74 , find 90% CI for lower and upper limit

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