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In the past decade, intensive anti-smoking campaigns have been sponsored by both federal and private agencies. Suppose that the American Cancer Society randomly sampled 500 adults in 1997 and then sampled 600 adults in 2007 to determine whether there was evidence that the proportion of smokers has decreased. Of the 500 adults surveyed in 1997, 150 of them were smokers. Of the 600 surveyed in 2007, 120 of them were smokers. Test the claim that anti-smoking campaigns were effective over the 10 year period. What is the value of the Test Statistic for this hypothesis test? Round phat to the 100ths place. Round p1-hat to the 100ths place. Round p2-hat to the 100ths place. Round Z to the 100ths place.

In the past decade, intensive anti-smoking campaigns have been sponsored by both federal and private agencies. Suppose that the American Cancer Society randomly sampled 500 adults in 1997 and then sampled 600 adults in 2007 to determine whether there was evidence that the proportion of smokers has decreased. Of the 500 adults surveyed in 1997, 150 of them were smokers. Of the 600 surveyed in 2007, 120 of them were smokers. Test the claim that anti-smoking campaigns were effective over the 10 year period. What is the value of the Test Statistic for this hypothesis test? Round phat to the 100ths place. Round p1-hat to the 100ths place. Round p2-hat to the 100ths place. Round Z to the 100ths place.

Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 31EQ
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In the past decade, intensive anti-smoking campaigns have been sponsored by both federal and private agencies. Suppose that the American Cancer Society randomly sampled 500 adults in 1997 and then sampled 600 adults in 2007 to determine whether there was evidence that the proportion of smokers has decreased. Of the 500 adults surveyed in 1997, 150 of them were smokers. Of the 600 surveyed in 2007, 120 of them were smokers. Test the claim that anti-smoking campaigns were effective over the 10 year period. What is the value of the Test Statistic for this hypothesis test? Round phat to the 100ths place. Round p1-hat to the 100ths place. Round p2-hat to the 100ths place. Round Z to the 100ths place.
Transcribed Image Text:In the past decade, intensive anti-smoking campaigns have been sponsored by both federal and private agencies. Suppose that the American Cancer Society randomly sampled 500 adults in 1997 and then sampled 600 adults in 2007 to determine whether there was evidence that the proportion of smokers has decreased. Of the 500 adults surveyed in 1997, 150 of them were smokers. Of the 600 surveyed in 2007, 120 of them were smokers. Test the claim that anti-smoking campaigns were effective over the 10 year period. What is the value of the Test Statistic for this hypothesis test? Round phat to the 100ths place. Round p1-hat to the 100ths place. Round p2-hat to the 100ths place. Round Z to the 100ths place.
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