Question: Compute a .95 confidence interval if (a) n = 10, X = 26, s = 9, (b) n = 18, X = 132, s =

Compute a .95 confidence interval if

(a) n = 10, X¯ = 26, s = 9,

(b) n = 18, X¯ = 132, s = 20,

(c) n = 25, X¯ = 52, s = 12.

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