Monday
March 30, 2015

Homework Help: statistics

Posted by marie on Wednesday, August 26, 2009 at 7:27pm.

3 In 1999, a sample of 200 in-store shoppers showed that 42 paid by debit card. In 2004, 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. (b) Carry out the test at = .01. (c) Find
the p-value. (d) Test whether normality may be assumed.

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