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 4.7 years. At a = 0.02, 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). 14.5 9.8 8.7 14.8 15.4 13.9 9.1 17.9 - 9.3 10.6 16.5 17.3 21.3 13.3 22.2 20.2 9.3 21.6 7.3 14.9 13.6 15.6 8.7 19.4 22.1 10.8 11.2 9.2 22.2 15.9 12.1 20.8 (a) Identify the claim and state the null hypothesis and alternative hypothesis. O A. Ho: H> 13 (claim) Ha:uS 13 Ο D. Ho: μ 3 Ha:Hs 13 (claim) O B. Họ: Hs 13 (claim) Hi> 13 OC. Ho: H= 13 (claim) HiH#13 O E. Ho:H2 13 (claim) OF. Ho: u4 13 (claim) Ha:u= 13 (b) Find the P-value. Use technology. P= (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim at the 2% level of significance. O A. Reject Ho. There is sufficient evidence to reject the claim that the mean time it takes smokers to O B. Reject Ho. There is not sufficient evidence to reject the claim that the mean time it takes quit smoking permanently is 13 years. smokers to quit smoking permanently is 13 years. OC. Fail to reject Hg. There is not sufficient evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 years. O D. Fail to reject Hg. There is sufficient evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 years.
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 4.7 years. At a = 0.02, 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). 14.5 9.8 8.7 14.8 15.4 13.9 9.1 17.9 - 9.3 10.6 16.5 17.3 21.3 13.3 22.2 20.2 9.3 21.6 7.3 14.9 13.6 15.6 8.7 19.4 22.1 10.8 11.2 9.2 22.2 15.9 12.1 20.8 (a) Identify the claim and state the null hypothesis and alternative hypothesis. O A. Ho: H> 13 (claim) Ha:uS 13 Ο D. Ho: μ 3 Ha:Hs 13 (claim) O B. Họ: Hs 13 (claim) Hi> 13 OC. Ho: H= 13 (claim) HiH#13 O E. Ho:H2 13 (claim) OF. Ho: u4 13 (claim) Ha:u= 13 (b) Find the P-value. Use technology. P= (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim at the 2% level of significance. O A. Reject Ho. There is sufficient evidence to reject the claim that the mean time it takes smokers to O B. Reject Ho. There is not sufficient evidence to reject the claim that the mean time it takes quit smoking permanently is 13 years. smokers to quit smoking permanently is 13 years. OC. Fail to reject Hg. There is not sufficient evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 years. O D. Fail to reject Hg. There is sufficient evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 years.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text: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 4.7 years. At a = 0.02, 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).
14.5 9.8
8.7
14.8 15.4
13.9 9.1 17.9 -
9.3 10.6 16.5 17.3 21.3
13.3 22.2 20.2
9.3 21.6
7.3
14.9
13.6 15.6 8.7
19.4
22.1 10.8 11.2 9.2
22.2 15.9 12.1 20.8
(a) Identify the claim and state the null hypothesis and alternative hypothesis.
O A. Ho: u> 13 (claim)
H:us 13
O B. Họ: us 13 (claim)
H:u> 13
Oc. Ho: H= 13 (claim)
H: H# 13
O D. Ho: H> 13
O E. Ho: u2 13 (claim)
OF. Ho: u# 13 (claim)
Ha: us 13 (claim)
Ha: H< 13
Hạ: u= 13
(b) Find the P-value. Use technology.
P=
| (Round to three decimal places as needed.)
(c) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim at the 2% level of significance.
O A. Reject Hg. There is sufficient evidence to reject the claim that the mean time it takes smokers to O B. Reject Hg. There is not sufficient evidence to reject the claim that the mean time it takes
quit smoking permanently is 13 years.
smokers to quit smoking permanently is 13 years.
O c. Fail to reject Hg. There is not sufficient evidence to reject the claim that the mean time it takes
smokers to quit smoking permanently is 13 years.
OD. Fail to reject Ho. There is sufficient evidence to reject the claim that the mean time it takes
smokers to quit smoking permanently is 13 years.
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