(a)
To Explain: the mean for the null hypothesis to be true in this setting.
(a)
Answer to Problem 10E
The correct mean score for the students who are at least 30 years of age is 115.
Explanation of Solution
Given:
From the previous exercise
If the null hypothesis
(b)
To Explain: the P-value.
(b)
Answer to Problem 10E
The P-value is if the population mean is equal to 115, then there is possibility of 1.01% of getting a random sample with a sample mean of 125.7 or more.
Explanation of Solution
Given:
Result previous exercise:
The P-value is if the population mean is equal to 115, then there is possibility of 1.01% of getting a random sample with a sample mean of 125.7 or more.
Chapter 9 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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