Question: (a) Test whether 1 2 at the = 0.05 level of signicance for the given sample data. (b) Construct a 95% condence interval

(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.

(a) Test whether µ1 ‰  µ2 at the α =

Assume that the populations are normally distributed.

Population 1 Population 2 15 14.2 3.5 rt 15 15.3 3.2

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