Statistic Confidence Level: Prediction interval in kilowatt hours
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a. Determine the .95 confidence interval, in thousands of kilowatt-hours, for the mean of all six-room homes.
b. Determine the .95 prediction interval, in thousands of kilowatt-hours, for a particular six-room home.
Number of Kilowatt-Hours Number of Kilowatt-Hours
Rooms (thousands) Rooms (thousands)
12 9 8 6
9 7 10 8
14 10 10 10
6 5 5 4
10 8 7 7
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