Answered: Historically, the industries with the…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 10CYU

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Historically, the industries with the most complaints to the Better Business Bureau have been banks, cable and satellite television companies, collection agencies, cellular phone providers, and new car dealerships. The results for a sample of 200 complaints are contained in the file BBB. Click on the datafile logo to reference the data.

Transcribed Image Text:Historically, the industries with the most complaints to the Better Business Bureau have been banks, cable and satellite television companies, collection agencies, cellular phone providers, and new car dealerships. The results for a sample of 200 complaints are contained in the file BBB. Click on the datafile logo to reference the data. DATA file a. Construct a frequency distribution for the number of complaints by industry. Observed Category Frequency Bank 26 Cable 44 Car 42 Cell 60 Collection 28 Total 200 b. Using a = 0.01, conduct a hypothesis test to determine whether the probability of a complaint is the same for the five industries. The test-statistic is (to 3 decimals). p-value = (to 4 decimals) What is your conclusion? Select your answer - c. Which industry has the most complaints? - Select your answer - v Dropping the industry with the most complaints using a = 0.05, conduct a hypothesis test to determine whether the probability of a complaint is the same for the remaining four industries. The test-statistic is (to 3 decimals). p-value = (to 4 decimals) What is your conclusion? Select your answer -

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