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Chambe x D Course H X C The Le x P Take a Tes X G normal d X A doctor X Upload D x C Secure https:// com aspx?testld-151954383 www.mathxl /Student/PlayerTest Applied Managerial Statistics (100) Tiesha McGrew & Quiz: Final Exam Time Remaining: 02:55:06 Submit Quiz This Question: 14 pts 20 of 24 (20 complete) This Quiz 250 pts possible The lengths of time (in years) ittook a random sample of 32 former smokers to quit smoking permanently are listed. Assume the population standard deviation is 4.4 years. At o -0.08, 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). 8.3 12.2 19.2 12.8 12.5 19.3 16.9 19.2 11.6 12.8 20.5 11.1 19.9 21.7 8.4 9.6 22.1 14.1 11.9 14.4 21.4 12.2 18.5 18.5 22.4 17.5 20.5 22.6 20.1 15.7 11.1 14.6 (b) Identify the standardized test statistic. Use technology. z (Round to two decimal places as needed (c) Find the P-value. Use technology. Click to select your answer(s). 4:06 AM O Ask me anything 2/22/2017

Explanation / Answer

Statcrunch output for this problem is:

One sample Z hypothesis test:
: Mean of variable
H0 : = 14
HA : 14
Standard deviation = 4.4

Hypothesis test results:

0.0084

So,

Z = 2.64

p = 0.008

Variable n Sample Mean Std. Err. Z-Stat P-value var7 32 16.05 0.77781746 2.6355798

0.0084

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