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The contingency table shows the results of a random sample of former smokers by the number of times they tried to quit smoking before they were​ habit-free and gender. At α=0.10​, can you conclude that the number of times they tried to quit before they were​ habit-free is related to​ gender? Perform the indicated​ chi-square independence test by completing parts​ (a) through​ (e) below.

The contingency table shows the results of a random sample of former smokers by the number of times they tried to quit smoking before they were​ habit-free and gender. At α=0.10​, can you conclude that the number of times they tried to quit before they were​ habit-free is related to​ gender? Perform the indicated​ chi-square independence test by completing parts​ (a) through​ (e) below.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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The contingency table shows the results of a random sample of former smokers by the number of times they tried to quit smoking before they were​ habit-free and gender. At α=0.10​, can you conclude that the number of times they tried to quit before they were​ habit-free is related to​ gender? Perform the indicated​ chi-square independence test by completing parts​ (a) through​ (e) below.

The contingency table shows the results of a random sample of former smokers by the number of times they tried to quit smoking before they were habit-free and gender. At a = 0.10, can you conclude that the number of times they tried to quit before they were habit-free is related to gender? Perform the indicated chi-square independence test by completing parts (a) through (e) below. Number of times tried to quit before habit-free Gender 1 2-3 4 or more Male 272 259 148 Female 144 138 82 (a) Identify the claim and state H, and Ha. Ho: The number of times former smokers tried to quit H.: The number of times former smokers tried to quit Which hypothesis is the claim? Alternative hypothesis Null hypothesis (b) Determine the degrees of freedom, find the critical value, and identify the rejection region. Calculate the degrees of freedom. d.f. = Find the critical value. x =(Round to three decimal places as needed.) %3D Which region below is the correct rejection region? A. x² >x3 B. x? < xổ c. x? sx3 O D. x? > x3 (c) Calculate the test statistic. If convenient, use technology. x2 = (Round to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. V Ho. (e) Interpret the decision in the context of the original claim. There enough evidence at the 10% level of significance to conclude that number of times former smokers tried to quit
Transcribed Image Text:The contingency table shows the results of a random sample of former smokers by the number of times they tried to quit smoking before they were habit-free and gender. At a = 0.10, can you conclude that the number of times they tried to quit before they were habit-free is related to gender? Perform the indicated chi-square independence test by completing parts (a) through (e) below. Number of times tried to quit before habit-free Gender 1 2-3 4 or more Male 272 259 148 Female 144 138 82 (a) Identify the claim and state H, and Ha. Ho: The number of times former smokers tried to quit H.: The number of times former smokers tried to quit Which hypothesis is the claim? Alternative hypothesis Null hypothesis (b) Determine the degrees of freedom, find the critical value, and identify the rejection region. Calculate the degrees of freedom. d.f. = Find the critical value. x =(Round to three decimal places as needed.) %3D Which region below is the correct rejection region? A. x² >x3 B. x? < xổ c. x? sx3 O D. x? > x3 (c) Calculate the test statistic. If convenient, use technology. x2 = (Round to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. V Ho. (e) Interpret the decision in the context of the original claim. There enough evidence at the 10% level of significance to conclude that number of times former smokers tried to quit
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