# Question: a Test whether 1 2 at the

(a) Test whether µ1 ≠ µ2 at the α = 0.05 level of signiﬁcance for the given sample data.

(b) Construct a 95% conﬁdence interval about µ1 - µ2.

Assume that the populations are normally distributed.

(b) Construct a 95% conﬁdence interval about µ1 - µ2.

Assume that the populations are normally distributed.

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