In 2009, a sample of 200 in-store shoppers showed that 42 paid by debit card. In 2012,

Question:

In 2009, a sample of 200 in-store shoppers showed that 42 paid by debit card. In 2012, a sample of the same size showed that 62 paid by debit card.
(a) Formulate appropriate hypotheses to test whether the percentage of debit card shoppers increased by more than 5 percent, using α = .10.
(b) Find the p-value.