Given the following values for Xt and sw: (a) Xt = 44, sw = 9, (b) Xt

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Given the following values for X¯t and sw:

(a) X¯t = 44, sw = 9,

(b) X¯t = 43, sw = 9,

(c) X¯t = 43, sw = 3.

Assuming 20% trimming, test the hypothesis H0:

μt = 42 with α = .05 and n = 20.

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