Concept explainers
a.
Identify the percent of values that must be chopped off from each tail for the confidence interval of 95%.
a.
Answer to Problem 104E
The percent of values that must be chopped off from each tail is 2.5%.
Explanation of Solution
In a 95% confidence interval, 95% of observation will be considered as the middle values and the remaining 5% of values has to be chopped off from both sides of the tail. Thus, from each tail,
b.
Identify the percent of values that must be chopped off from each tail for the confidence interval of 90%.
b.
Answer to Problem 104E
The percent of values that must be chopped off from each tail is 5%.
Explanation of Solution
In a 90% confidence interval, 90% of observation will be considered as the middle values and the remaining 10% of values has to be chopped off from both sides of the tail. Thus, from each tail,
c.
Identify the percent of values that must be chopped off from each tail for the confidence interval of 98%.
c.
Answer to Problem 104E
The percent of values that must be chopped off from each tail is 1%.
Explanation of Solution
In a 98% confidence interval, 98% of observation will be considered as the middle values and the remaining 2% of values has to be chopped off from both sides of the tail. Thus, from each tail,
d.
Identify the percent of values that must be chopped off from each tail for the confidence interval of 99%.
d.
Answer to Problem 104E
The percent of values that must be chopped off from each tail is 0.5%.
Explanation of Solution
In a 99% confidence interval, the 99% of observation will be considered as the middle values and the remaining 1% of values has to be chopped off from both sides of the tail. Thus, from each tail,
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Chapter 3 Solutions
Statistics- Unlocking The Power Of Data
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