"Office occupancy in a city is an indication of the economic health of the region in which it is located. Suppose a random sample of offices in Boston and Chicago was selected and the number of vacancies was recorded. Round all answers to four decimal places."

City Vacant Not Vacant Total
Boston 25 138 163
Chicago 15 122 137
Total 40 260 300
Our research question is, "Is there a difference in the vacancy rates for these two cities?"

1. What are the hypotheses for testing whether there is a significant difference?