13th Edition

ISBN: 9780135900826

Author: Triola

Publisher: PEARSON

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Textbook Question

Chapter 9, Problem 3FDD

Critical Thinking: Did the NFL Rule Change Have the Desired Effect?

Among 460 overtime National Football League (NFL) games between 1974 and 2011, 252 of the teams that won the over- time coin toss went on to win the game. During those years, a team could win the coin toss and march down the Field to win the game with a field goal, and the other team would never get possession of the ball. That just didn’t seem fair. Starting in 2012, the overtime rules were changed. In the first three years with the new overtime rules, 47 games were decided in overtime and the team that won the coin toss won 24 of those games.

Analyzing the Results

1. First explore the two proportions of overtime wins. Does there appear to be a difference? If so, how?

2. Create a claim to be tested, then test it. Use a hypothesis test as well as a confidence interval.

3. What do you conclude about the effectiveness of the over-time rule change?

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Chapter 9, Problem 2FDD

Chapter 10.1, Problem 1BSC

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Chapter 9 Solutions

ELEMENTARY STATS. 18 WEEK ACCESS CODE

Ch. 9.1 - Verifying Requirements In the largest clinical...Ch. 9.1 - Verifying Requirements In the largest clinical...Ch. 9.1 - Hypotheses and Conclusions Refer to the hypothesis...Ch. 9.1 - Using Confidence Intervals a. Assume that we want...Ch. 9.1 - Interpreting Displays. In Exercises 5 and 6, use...Ch. 9.1 - Treating Carpal Tunnel Syndrome Carpal tunnel...Ch. 9.1 - Testing Claims About Proportions. In Exercises...Ch. 9.1 - Accuracy of Fast Food Drive-Through Orders In a...Ch. 9.1 - Testing Claims About Proportions. In Exercises...Ch. 9.1 - Testing Claims About Proportions. In Exercises...

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Solution Summary: The author concludes that there is no effectiveness of the overtime rule change. The test statistic is 0.49 and the P -value is 0.626.

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Chapter 9 Solutions