Question: Given the following values for Xt and sw: (a) Xt = 44, sw = 9, (b) X t = 43, sw = 9, (c) Xt

Given the following values for ¯Xt and sw:

(a) ¯Xt = 44, sw = 9, (b)

¯X t = 43, sw = 9,

(c) ¯Xt = 43, sw = 3, and assuming 20% trimming, test the hypothesis H0: μt = 42 with α = 0.05 and n = 20.

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