Babyhands1611 Babyhands1611

05-10-2022
Mathematics

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the daily useage time on the apple iphone is normally distributed with mean 5.4 hours and standard deviation 1.2 hours. suppose you survey 3 of your friends who have iphones. what is the probability that their mean useage time is between 5 and 6 hours? round your answer to three decimal places.

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