Concept explainers
(a)
To Explain: the parameter of interest.
(a)

Answer to Problem 58E
Population proportion
Explanation of Solution
The parameter of interest is the population value of which requires knowing the value or other information.
PAREMETER OF INTEREST =Population proportion
(b)
To Explain: that the conditions for performing the significance test are met in this case.
(b)

Answer to Problem 58E
All conditions satisfied.
Explanation of Solution
Given:
Conditions for carrying out a one-sample
Random: Satisfied, because the sample is a random sample.
Both are greater than 10, therefore the normal requirement is satisfied.
Independent: can be assumed, the reason is that the
Thus all conditions satisfied.
(c)
To Explain: the P-value.
(c)

Answer to Problem 58E
There is a 0.011 possibility that the sample proportion of U.S. teens who think that young people ought to wait to have sex until wedding is 0.56 or more extreme, when the population proportion of U.S. teens who suppose that young people ought to wait to have sex until wedding is 0.50.
Explanation of Solution
The Minitab output is having “Test of
The sample proportion is
The P-value is mentioned in the Minitab output underneath “P-value”:
The P-value is that the likelihood of getting the worth of the sample proportion or a worth more extreme, once the null hypothesis is true.
Interpretation P-value, there is a 0.011 chance that the sample proportion of U.S. teens who think that young people ought to wait to have sex until wedding is 0.56 or more extreme, when the population proportion of U.S. teens who think that young people ought to wait to have sex until wedding is 0.50.
(d)
To Explain: that the data give convincing evidence that the population proportion differs from 0.5, justify answer with appropriate evidence.
(d)

Answer to Problem 58E
Yes, there is enough proof to help the claim.
Explanation of Solution
The significance level is 1 decreased by the confidence level:
P-value given in the output:
If the P-value is less than the significance level, then reject the null hypothesis.
There is enough proof to help the claim.
Chapter 9 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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