Concept explainers
a.
To check: Whether the confidence interval for the population mean would include 15 or not.
a.
Answer to Problem 86E
Yes, it would contain the value 15.
Explanation of Solution
Given:
P -value is 0.03
Confidence level = 99%
Concept used:
Reject the null hypothesis, if P -value is less than the significance level.
Calculation:
The level of significance is:
The null and alternative hypotheses are:
Here P -value (0.03) >
b.
To check: Whether the confidence interval for the population mean would include 15 or not.
b.
Answer to Problem 86E
No, it would not contain the value 15.
Explanation of Solution
Given:
Confidence level = 95%
Concept used:
Reject the null hypothesis, if P -value is less than the significance level.
Calculation:
The level of significance is:
The null and alternative hypotheses are:
Here P -value (0.03) <
Chapter 9 Solutions
The Practice of Statistics for AP - 4th Edition
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