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We are 95% confident that during October 2016 the mean water usage for all Rochester households...

We are 95% confident that during October 2016 the mean water usage for all Rochester households was between 1250 and 1350 cubic feet. In which statement can you have 95% confidence?

a. Mean water usage is greater than 1300 cubic feet.

b. Mean water usage is less than 1400 cubic feet.

c. Mean water usage is between 1200 and 1300 cubic feet.

d. Mean water usage is less than 1300 cubic feet.

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Answer #1

Mean water usage is between 1200 and 1300 cubic feet. (C)

[ explanation:-

we can be 95% confident that the true mean  Mean water usage is between 1200 and 1300 cubic feet.]

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