In 2011, the industries with the most complaints to the Better Business Bureau were banks, cable and

Question:

In 2011, the industries with the most complaints to the Better Business Bureau were banks, cable and satellite television companies, collection agencies, cellular phone providers, and new car dealerships (USA Today, April 16, 2012). The results for a sample of 200 complaints are contained in the DATAfile named BBB.
a. Construct a frequency for the number of complaints by industry.
b. Using a = .01, conduct a hypothesis test to determine whether the probability of a complaint is the same for the five industries. What is your conclusion?
c. Drop the industry with the most complaints. Using a = .05, conduct a hypothesis test to determine whether the probability of a complaint is the same for the remaining four industries.
Distribution
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