Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)

6th Edition

ISBN: 9781337115186

Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran

Publisher: Cengage Learning

See similar textbooks

Concept explainers

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.

Videos

Textbook Question

Chapter 12.1, Problem 6E

Traffic Accidents by Day of Week. The National Highway Traffic Safety Administration reported the percentage of traffic accidents occurring each day of the week. Assume that a sample of 420 accidents provided the following data.

Chapter 12.1, Problem 6E, Traffic Accidents by Day of Week. The National Highway Traffic Safety Administration reported the

a. Conduct a hypothesis test to determine if the proportion of traffic accidents is the same for each day of the week. What is the p-value? Using a .05 level of significance, what is your conclusion?
b. Compute the percentage of traffic accidents occurring on each day of the week. What day has the highest percentage of traffic accidents? Does this seem reasonable? Discuss.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 12.1, Problem 5E

Chapter 12.2, Problem 7E

Chapter 12 Solutions

Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)

Ch. 12.1 - Test the following hypotheses by using the χ2...Ch. 12.1 - Suppose we have a multinomial population with four...Ch. 12.1 - Television Audiences Across Networks. During the...Ch. 12.1 - M&M Candy Colors. Mars, Inc. manufactures M&M’s,...Ch. 12.1 - America’s Favorite Sports. The Harris Poll tracks...Ch. 12.1 - Traffic Accidents by Day of Week. The National...Ch. 12.2 - The following table contains observed frequencies...Ch. 12.2 - Prob. 8E Ch. 12.2 - Airline Ticket Purchases for Domestic and...Ch. 12.2 - Hiring and Firing Plans at Private and Public...

Ch. 12.2 - Health insurance benefits vary by the size of the...Ch. 12.2 - Vehicle Quality Ratings. A J. D. Power and...Ch. 12.2 - Company Reputation and Management Quality Survey....Ch. 12.2 - Prob. 14E Ch. 12.2 - The Carnegie Classification of Institutes of...Ch. 12.2 - Prob. 16E Ch. 12.3 - Use the sample data below to test the...Ch. 12.3 - 2. reconsider the observed frequencies in exercise...Ch. 12.3 - Late Flight Comparison Across Airlines. The sample...Ch. 12.3 - Electronic Component Supplier Quality Comparison....Ch. 12.3 - Kate Sanders, a researcher in the department of...Ch. 12.3 - Error Rates in Tax Preparation. A tax preparation...Ch. 12.3 - Social networking is becoming more and more...Ch. 12.3 - Supplier Quality: Three Inspection Outcomes. The...Ch. 12 - In 2011, the industries with the most complaints...Ch. 12 - Bistro 65 is a chain of Italian restaurants with...Ch. 12 - Based on sales over a six-month period, the five...Ch. 12 - Pace-of-Life Preference By Gender. A Pew Research...Ch. 12 - Church Attendance by Age Group. The Barna Group...Ch. 12 - Ambulance Calls by Day of Week. An ambulance...Ch. 12 - Prob. 31SE Ch. 12 - Phoenix Marketing International identified...Ch. 12 - The five most popular art museums in the world are...Ch. 12 - In a study conducted by Zogby International for...Ch. 12 - Six months ago, Fuentes Salty Snacks, Inc., added...Ch. 12 - Fresno Board Games manufactures and sells several...

Knowledge Booster

$Statistics$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Solution Summary: The author concludes that there is no significant change in the proportion of traffic accidents for each day of the week.

Concept explainers

Videos

Want to see the full answer?

Chapter 12 Solutions