b.) identify the standarized test statistic . Use technology. z=___(round to two
ID: 3046483 • Letter: B
Question
b.) identify the standarized test statistic . Use technology. z=___(round to two decimal places as needed)
c.) find the P-value. Use technology.P=____(round to three decimal places as needed)
d.) decide whether to reject or fail to reject the null 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 deviation is 6.3 years. At = 0.07, 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) 7.2 20.4 13.5 20.8 18.1 8.2 18.8 17.9 16.5 10.1 19.2 14.8 20.9 20.4 11.9 18.3 20.6 15.8 16.7 21.4 17.9 17.5 14.6 7.3 16.7 22.5 12.6 22.4 20.7 20.6 17.6 7.1 (a) Identify the claim and state the null hypothesis and alternative hypothesis. O C. OE A. Hop 14 (claim) Ha: 14 D. Ho : #14 (claim) Ha: = 14 O B. Ho: = 14 (claim) Ho: H 14 (claim) Ha : >14 Ho : 214 (claim) Ha: 14 Ha : 14 (claim)Explanation / Answer
The statistical software output for this problem is:
One sample Z hypothesis test:
: Mean of variable
H0 : = 14
HA : 14
Standard deviation = 6.3
Hypothesis test results:
Hence,
a) Hypotheses: Option B is correct.
b) z = 2.27
c) P - value = 0.023
d) Reject the null hypothesis.
Variable n Sample Mean Std. Err. Z-Stat P-value Data 32 16.53125 1.1136932 2.2728432 0.023Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.