A nutritionist wants to determine how much time nationally
people spend eating and drinking. The record...
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A nutritionist wants to determine how much time nationallypeople spend eating and drinking. The record shows that the meanwas 1.5 hours. Suppose for a random sample of 921 people age 15 or​older, the mean amount of time spent eating or drinking per day is1.62 hours with a standard deviation of 0.71 hour. What is theupper boundary of the 95% C.I.?
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Solution Given that 162s 071n 921Degrees of freedom df n 1
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