A small university is trying to monitor its electricity usage. For a random sample of 30 weekend days (Saturdays and Sunday student center used an average of 94.26 kilowatt hours (kWh) with standard deviation 43.29. For a random sample of 60 w (Monday - Friday), the student center used an average of 112.63 kWh with standard deviation 32.07. Construct a 95% confidence interval for the difference in mean electricity use at the student center between weekdays and days. Use two decimal places in your margin of error. O -6.80 to 43.54 kWh O-4.61 to 41.35 kWh -3.38 to 40.51 kWh O 0.12 to 36.62 kWh

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A small university is trying to monitor its electricity usage. For a random sample of 30 weekend days (Saturdays and Sundays), the
student center used an average of 94.26 kilowatt hours (kWh) with standard deviation 43.29. For a random sample of 60 weekdays,
(Monday - Friday), the student center used an average of 112.63 kWh with standard deviation 32.07.
Construct a 95% confidence interval for the difference in mean electricity use at the student center between weekdays and weekend
days. Use two decimal places in your margin of error.
-6.80 to 43.54 kWh
-4.61 to 41.35 kWh
-3.38 to 40.51 kWh
0.12 to 36.62 kWh
Transcribed Image Text:A small university is trying to monitor its electricity usage. For a random sample of 30 weekend days (Saturdays and Sundays), the student center used an average of 94.26 kilowatt hours (kWh) with standard deviation 43.29. For a random sample of 60 weekdays, (Monday - Friday), the student center used an average of 112.63 kWh with standard deviation 32.07. Construct a 95% confidence interval for the difference in mean electricity use at the student center between weekdays and weekend days. Use two decimal places in your margin of error. -6.80 to 43.54 kWh -4.61 to 41.35 kWh -3.38 to 40.51 kWh 0.12 to 36.62 kWh
A small university is trying to monitor its electricity usage. For a random sample of 30 weekend days (Saturdays and Sundays), the
student center used an average of 94.26 kilowatt hours (kWh) with standard deviation 43.29. For a random sample of 60 weekdays,
(Monday - Friday), the student center used an average of 112.63 kWh with standard deviation 32.07.
Construct a 95% confidence interval for the difference in mean electricity use at the student center between weekdays and weekend
days. Use two decimal places in your margin of error.
-6.80 to 43.54 kWh
-4.61 to 41.35 kWh
-3.38 to 40.51 kWh
0.12 to 36.62 kWh
Transcribed Image Text:A small university is trying to monitor its electricity usage. For a random sample of 30 weekend days (Saturdays and Sundays), the student center used an average of 94.26 kilowatt hours (kWh) with standard deviation 43.29. For a random sample of 60 weekdays, (Monday - Friday), the student center used an average of 112.63 kWh with standard deviation 32.07. Construct a 95% confidence interval for the difference in mean electricity use at the student center between weekdays and weekend days. Use two decimal places in your margin of error. -6.80 to 43.54 kWh -4.61 to 41.35 kWh -3.38 to 40.51 kWh 0.12 to 36.62 kWh
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