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Interpret confidence intervals for average daily exercise times

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Calculate and interpret the following confidence intervals

1) 95% CI for the average daily exercise time of males
2) 99% CI for the average daily exercise time of females

Data (in minutes):
males (15):
60
40
50
90
50
60
10
10
35
70
43
25
15
25
30

females (15):
45
55
60
60
40
70
10
25
40
38
20
35
20
45
20

Then calculate finite population correction factor if the population size is 400. Are the correction factors same or different for the two variables? Justify

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Solution Preview

calculate and interpret the following confidence intervals
1) 95% CI for the average daily exercise time of males
With 95% confidence level, α=0.05, and the corresponding critical value, or z-score isz_(α/2)=1.96
So (X ̅-1.96 s/√15,X ̅+1.96 s/√15)= (40.87-1.96 ...

Solution Summary

The expert interpret confidence intervals for average daily exercise times.

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