Monday
March 30, 2015

Homework Help: statistics

Posted by Asia on Wednesday, February 13, 2013 at 1:08pm.

ten randomly selected people were asked how long they slept at night. The mean time was 7.1 hours and the (sample) standard deviation was 0.78 hours. Find the 95% confidence interval of the mean time. Assume the variable is normally distributed.

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