Section 1
To graph: The diagram that illustrates the effect of the confidence level on the width of the interval.
Section 1
Explanation of Solution
Calculation: The confidence intervals based on different
And,
Where
And,
Therefore, the required confidence interval is
For a confidence level of
And,
Therefore, the required confidence interval is
And,
Therefore, the required confidence interval is
And,
Therefore, the required confidence interval is
Graph:
Section 2
To explain: The results.
Section 2
Answer to Problem 14E
Solution: The width of the confidence interval expands due to hike in the level of confidence.
Explanation of Solution
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Chapter 6 Solutions
Introduction to the Practice of Statistics
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