Chapter 6, Problem 44P

The Port Authority also wants to determine if the gender profile of its customers has changed since last year, when 59.4% of its orders placed were placed by males. The genders for a sample of 49,896 orders placed this year are collected and recorded in the file PortAuthority.

1. a. Formulate hypotheses that can be used to test whether the proportion of orders placed by male customers this year differs from the proportion of orders placed by male customers placed last year.
2. b. Use the data in the file PortAuthority to conduct your hypothesis test. What is the p value for your hypothesis test? At α = 0.05, what is your conclusion?