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Question: based on a random sample of 1140 adults the mean...

Question details

Based on a random sample of

1140

​adults, the mean amount of sleep per night is

8.56

hours. Assuming the population standard deviation for amount of sleep per night is

1.3

​hours, construct and interpret a

90​%

confidence interval for the mean amount of sleep per night.

A

9090​%

confidence interval is

​(nothing​,nothing​).

​(Round to two decimal places as​ needed.)

Interpret the confidence interval.

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