Use the given statistics to complete parts? (a) and? (b). Assumethat the populations are normally distributed.
Population 1 Population 2
n=24 n=17
x=47.4 x=42.2
s=6.2 s=9.7
?(a) Test whether ?1>?2 at the ?=0.05 level of significancefor the given sample data. ?
(b) Construct a 99% confidence interval about ?1??2.
