Question: Office occupancy in a city is an indication of the

Office occupancy in a city is an indication of the economic health of the region in which it is located. A random sample of 165 offices in Boston was selected and it was found that 24 were vacant. A random sample of 145 offices in Chicago was selected and it was found that 17 were vacant.
a. Construct a 95% confidence interval to estimate the difference in vacancy rates between these two cities. What conclusions can be made?
b. Verify your results using PHStat.



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  • CreatedJuly 17, 2015
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