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hours slept was r : 6.8 hours The number of hours slept by dults seems to be norm..ally distributed with mean 7 hou s and

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hours slept was r : 6.8 hours The number of hours slept by dults seems to be norm..ally distributed with mean 7 hou s and standard deviation z hours. ) Describe the sampling distribution of the sample mean I. b) what is the probability of drawing a sample of 12 adults with a mean o 6." hours of sleep or less? Give your ans er as a pe centage rounded to & decimal places

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