Mathematics, 28.01.2020 10:31 elevupnext1100
Suppose that weekly use of gasoline for motor vehicle travel by adults in north america follows a distribution with a mean of 20 gallons and a standard deviation of 6 gallons. now, suppose a random sample of 45 adults is taken and the average amount of gas used each week is 18.2. what is the shape, mean and standard deviation of the sampling distribution of the sample mean?
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