Concept explainers
(a)
The null hypothesis H0 and the alternative hypothesis H1.
(a)
Answer to Problem 1RE
Solution: The null and alternative hypothesis are
and
Explanation of Solution
Given: The
Explanation: In the study,
(b)
To explain: The type I error in this study.
(b)
Answer to Problem 1RE
Solution: The null hypothesis H0 is rejected when the mean credit card of college UG students has not reduced. Thus, it can be a type I error.
Explanation of Solution
(c)
To explain: The type II error in this study.
(c)
Answer to Problem 1RE
Solution: The null hypothesis H0 is not rejected when the mean credit card of college UG students has reduced. Thus, it can be a type II error.
Explanation of Solution
(d)
To state: The conclusion if H0 is not rejected.
(d)
Answer to Problem 1RE
Solution: There is not enough evidence at the significance level to support the researcher’s opinion.
Explanation of Solution
(e)
To state: The conclusion if H0 is rejected.
(e)
Answer to Problem 1RE
Solution: There is enough evidence at the significance level to support the researcher’s opinion.
Explanation of Solution
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