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 devia years. At a= 0.06, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 14 years? Complete p through (e). 16.4 11.8 20.3 12.8 7.3 14.9 17.5 21.7 12.3 22.9 12.7 16.5 12.7 19.7 20.1 8.9 17.1 11.5 12.4 11.2 20.9 13.7 12.1 16.1 18.9 10.7 13.6 18.9 20.4 7.2 16.6 21.1 ..... a) Identify the claim and state the null hypothesis and alternative hypothesis
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 devia years. At a= 0.06, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 14 years? Complete p through (e). 16.4 11.8 20.3 12.8 7.3 14.9 17.5 21.7 12.3 22.9 12.7 16.5 12.7 19.7 20.1 8.9 17.1 11.5 12.4 11.2 20.9 13.7 12.1 16.1 18.9 10.7 13.6 18.9 20.4 7.2 16.6 21.1 ..... a) Identify the claim and state the null hypothesis and alternative hypothesis
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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Help with letter b please
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 6.4
years. At a= 0.06, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 14 years? Complete parts (a)
through (e).
16.4
11.8 20.3
12.8
7.3
14.9
17.5 21.7 O
12.3
22.9
12.7
16.5
12.7
19.7
20.1
8.9
17.1
11.5
12.4
11.2
20.9
13.7
12.1 16.1
18.9
10.7
13.6
18.9
20.4
7.2
16.6 21.1
(a) Identify the claim and state the null hypothesis and alternative hypothesis.
OC Ho: H>14 (claim)
Ha us14
YA Ho: H=14 (claim)
B. Ho: H2 14 (claim)
Ha: H#14
Ha: H< 14
OD Ho: Hs14 (claim)
Ho: H> 14
OF Ho: H#14 (claim)
Ha: > 14
Hai Hs14 (claim)
Ha. μ= 14
(b) Identify the standardized test statistic. Use technology.
z= (Round to two decimal places as needed.)
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