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 Bank Cable Car  Collection Cell Total 26 44 42 28 60 200  Using 0c = .01 , conduct a hypothesis test to determine if the probability of a complaint is the same for the five industries. The test-statistic is ___ (to 2 decimals) p-value ___ to 4 decimals. Dropping the industry with the most complaints using 0c = .05 , conduct a hypothesis test to determine if the probability of a complaint is the same for the remaining four industries. The test-statistic is  (to 2 decimals). p-value   (to 4 decimals)

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.