Question: =+5.27. A study 5 years ago reported that the median amount of sleep by American adults is 7.5 hours out of 24 with a standard

=+5.27. A study 5 years ago reported that the median amount of sleep by American adults is 7.5 hours out of 24 with a standard deviation of 1.5 hours and that 5% of the population sleep 6 or less hours while another 5% sleep 9 or more hours. A current sample of eight adults reported their average amounts of sleep per 24 hours as 7.2, 8.3, 5.6, 7.4, 7.8,

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