Concept explainers
a:
The difference between the two population means.
a:
Explanation of Solution
The difference between the two population means (DP) can be calculated as follows:
The difference between the two population means lies between -18.87 and 73.87.
b:
The new difference between the two population means.
b:
Explanation of Solution
The difference between the two population means (DP) can be calculated as follows:
The difference between the two population means lies between -91.33 and 201.33.
c:
The impact of increasing standard deviation.
c:
Explanation of Solution
When the standard deviation increases, it increases the difference in the interval.
d:
The difference between the two population means with
d:
Explanation of Solution
The difference between the two population means (DP) can be calculated as follows:
The difference between the two population means lies between -18.87 and 91.26.
e:
The impact of increasing sample size.
e:
Explanation of Solution
When the sample size increases, it reduces the difference in the interval.
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Chapter 13 Solutions
Statistics for Management and Economics (Book Only)
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