Mathematics

Ulises

1 March, 18:48

In 1965, about 44% of the U. S. adult population had never smoked cigarettes. A national health survey of 1205 U. S. adults (presumably selected randomly) during 2006 revealed that 615 had never smoked cigarettes.

Reference: Ref 18-5

Suppose you wished to test whether there has been a change since 1965 in the proportion of U. S. adults that have never smoked cigarettes. Which of the following are the appropriate hypotheses?

Select one:

a. H0: p = 0.51, Ha: p ≠ 0.51

b. H0: p = 0.44, Ha: p > 0.44

c. H0: p = 0.44, Ha: p < 0.44

d. H0: p = 0.44, Ha: p ≠ 0.44