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According to a certain survey, adults spend 2.35 hours per day watching television on a weekday….
According to a certain survey, adults spend 2.35 hours per day watching television on a weekday. Assume that the standard deviation for “time spent watching television on a weekday” is 1.93 hours. If a random sample of 50 adults is obtained, describe the sampling distribution of x overbar, the mean amount of time spent watching television on a weekday.
One consequence of the popularity of the Internet is that it is thought to reduce television watching. Suppose that a random sample of
45 individuals who consider themselves to be avid Internet users results in a mean time of 1.98 hours watching television on a weekday. Determine the likelihood of obtaining a sample mean of 1.98 hours or less from a population whose mean is presumed to be 2.35