Concept explainers
a.
To draw: The conclusion by conducting the appropriate significance test.
a.
Answer to Problem 65E
Yes, data set is providing sufficient evidences.
Explanation of Solution
Given:
Formula used:
Test statistic formula is:
Calculation:
The null and alternative hypotheses for the provided case are:
The test statistic is computed as:
The degree of freedom is calculated as:
The p-value:
In this case,
The null hypothesis could not be rejected which is not showing the sufficient evidences for the claim at significance level of 5%.
b.
To find: The error that is committed using the result of above part.
b.
Answer to Problem 65E
Type II error.
Explanation of Solution
From above part, the null hypothesis has not been rejected. Thus, there is a possibility of committing the Type II error.
Chapter 10 Solutions
The Practice of Statistics for AP - 4th Edition
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