The lengths of time (in years) it took a random sample of 32 former smokers to quit smoking permanently are listed. Assume the population standard deviation is 5.3 years. At a=D0.1, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 years? Complete parts (a) through (e). 7.7 22.1 8.8 18.7 8.2 8.2 10.5 D 11.9 22.5 13.9 13.5 15.3 9.4 20.6 7.2 21.8 20.5 8.7 16.2 13.3 20.9 13.4 13.5 7.4 16.9 17.9 18.4 10.1 11.3 9.2 13.8 19.9 ..... (a) Identify the claim and state the null hypothesis and alternative hypothesis. OA. Ho us13 (claim) ΟΒ. H μ> 13 Ho: H= 13 (claim) H u# 13 Ha: u> 13 Ha: us 13 (claim) O D. Ho: u213 (claim) H3 u<13 OE. Ho: H> 13 (claim) Ho: u 13 (claim) Ha: us 13 H3: µ = 13 (b) Identify the standardized test statistic. Use technology. =| | (Round to two decimal places as needed.)
The lengths of time (in years) it took a random sample of 32 former smokers to quit smoking permanently are listed. Assume the population standard deviation is 5.3 years. At a=D0.1, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 years? Complete parts (a) through (e). 7.7 22.1 8.8 18.7 8.2 8.2 10.5 D 11.9 22.5 13.9 13.5 15.3 9.4 20.6 7.2 21.8 20.5 8.7 16.2 13.3 20.9 13.4 13.5 7.4 16.9 17.9 18.4 10.1 11.3 9.2 13.8 19.9 ..... (a) Identify the claim and state the null hypothesis and alternative hypothesis. OA. Ho us13 (claim) ΟΒ. H μ> 13 Ho: H= 13 (claim) H u# 13 Ha: u> 13 Ha: us 13 (claim) O D. Ho: u213 (claim) H3 u<13 OE. Ho: H> 13 (claim) Ho: u 13 (claim) Ha: us 13 H3: µ = 13 (b) Identify the standardized test statistic. Use technology. =| | (Round to two decimal places as needed.)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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