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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. DATA file a. Construct a frequency distribution for the number of complaints by industry. Observed Category Frequency Bank Cable Car Cell Collection Total 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 - : 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)

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 Cable Car Cell Collection Total 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 - : 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)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The text is from an educational website focusing on statistical analysis involving complaints to the Better Business Bureau. The goal is to analyze data from 200 complaints across five industries: banks, cable and satellite television companies, collection agencies, cellular phone providers, and new car dealerships. ### Task Breakdown **a. Frequency Distribution** - Construct a table listing the frequency of complaints for each industry. - Categories include: - Bank - Cable - Car - Cell - Collection - Calculate the total number of complaints. **b. Hypothesis Test** - **Objective**: Determine if the probability of a complaint is the same across the five industries. - **Significance Level**: \( \alpha = 0.01 \) - **Outputs Needed**: - Test statistic (rounded to 3 decimals) - p-value (rounded to 4 decimals) - **Conclusion**: A drop-down menu for selecting the conclusion based on the hypothesis test results. **c. Analysis of the Industry with Most Complaints** - Identify which industry has the most complaints. - Conduct a new hypothesis test, removing the top complaint industry, to evaluate the remaining four categories. - **Significance Level**: \( \alpha = 0.05 \) - **Outputs Needed**: - Test statistic (rounded to 3 decimals) - p-value (rounded to 4 decimals) - **Conclusion**: A drop-down menu for selecting the conclusion. ### Graph/Diagram Explanation There are no specific graphs or diagrams included in the image. The primary focus is on constructing a frequency table and conducting statistical hypothesis tests.
Transcribed Image Text:The text is from an educational website focusing on statistical analysis involving complaints to the Better Business Bureau. The goal is to analyze data from 200 complaints across five industries: banks, cable and satellite television companies, collection agencies, cellular phone providers, and new car dealerships. ### Task Breakdown **a. Frequency Distribution** - Construct a table listing the frequency of complaints for each industry. - Categories include: - Bank - Cable - Car - Cell - Collection - Calculate the total number of complaints. **b. Hypothesis Test** - **Objective**: Determine if the probability of a complaint is the same across the five industries. - **Significance Level**: \( \alpha = 0.01 \) - **Outputs Needed**: - Test statistic (rounded to 3 decimals) - p-value (rounded to 4 decimals) - **Conclusion**: A drop-down menu for selecting the conclusion based on the hypothesis test results. **c. Analysis of the Industry with Most Complaints** - Identify which industry has the most complaints. - Conduct a new hypothesis test, removing the top complaint industry, to evaluate the remaining four categories. - **Significance Level**: \( \alpha = 0.05 \) - **Outputs Needed**: - Test statistic (rounded to 3 decimals) - p-value (rounded to 4 decimals) - **Conclusion**: A drop-down menu for selecting the conclusion. ### Graph/Diagram Explanation There are no specific graphs or diagrams included in the image. The primary focus is on constructing a frequency table and conducting statistical hypothesis tests.
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