Concept explainers
a:
The difference between the two population means.
a:
Explanation of Solution
The unequal variance estimator (v) can be calculated as follows:
The value of unequal variance is 64.8.
The difference between the two population means (DP) can be calculated as follows:
The difference between the two population means lies between -1.59 and 7.59.
b:
The difference between the two population means with increasing standard deviation.
b:
Explanation of Solution
The unequal variance estimator (v) can be calculated as follows:
The value of unequal variance is 63.1.
The difference between the two population means (DP) can be calculated as follows:
The difference between the two population means lies between -7.08 and 13.08.
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 increasing
d:
Explanation of Solution
The unequal variance estimator (v) can be calculated as follows:
The value of unequal variance is 131.
The difference between the two population means (DP) can be calculated as follows:
The difference between the two population means lies between -0.22 and 6.22.
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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