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