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A traffic engineer wishes to determine whether cell phone use while driving causes subjects to speed. The engineer has organized for subjects' friends to call while they are driving on a highway and then records their speeds before, during, and after the call. A test is performed on the following hypothesis: Ho : Pphone = Pno phone Ha : Pphone # Pno phone Define Pphone as the proportion who speed while on the phone and Pno phone as the proportion who speed while not on the phone. If this test yields ap-value of 0.0782, which of the following conclusions can be made?

A traffic engineer wishes to determine whether cell phone use while driving causes subjects to speed. The engineer has organized for subjects' friends to call while they are driving on a highway and then records their speeds before, during, and after the call. A test is performed on the following hypothesis: Ho : Pphone = Pno phone Ha : Pphone # Pno phone Define Pphone as the proportion who speed while on the phone and Pno phone as the proportion who speed while not on the phone. If this test yields ap-value of 0.0782, which of the following conclusions can be made?

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 30E
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A traffic engineer wishes to determine whether cell phone use while driving causes subjects to speed. The engineer has organized for subjects' friends to call while they are driving on a highway and then records their speeds before, during, and after the call. A test is performed on the following hypothesis: Ho : Pphone = Pno phone Ha : Pphone 7 Pno phone Define Pphone as the proportion who speed while on the phone and Pao phone as the proportion who speed while not on the phone. If this test yields a p-value of 0.0782, which of the following conclusions can be made?
Transcribed Image Text:A traffic engineer wishes to determine whether cell phone use while driving causes subjects to speed. The engineer has organized for subjects' friends to call while they are driving on a highway and then records their speeds before, during, and after the call. A test is performed on the following hypothesis: Ho : Pphone = Pno phone Ha : Pphone 7 Pno phone Define Pphone as the proportion who speed while on the phone and Pao phone as the proportion who speed while not on the phone. If this test yields a p-value of 0.0782, which of the following conclusions can be made?
A A 90% confidence interval will NOT contain 0. A 95% confidence interval will NOT contain 0. C A 99% confidence interval willNOT contain 0. D Both 90% and 95% confidence intervals will contain 0. A 99% confidence interval will contain 0.0782.
Transcribed Image Text:A A 90% confidence interval will NOT contain 0. A 95% confidence interval will NOT contain 0. C A 99% confidence interval willNOT contain 0. D Both 90% and 95% confidence intervals will contain 0. A 99% confidence interval will contain 0.0782.
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