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Suppose that you wanted to estimate the average amount of time at a school student spends per day exercising. you decide to do this by taking a random sample of students from your school. You will calculate the mean time spent exercising for your sample. You will then use your sample me in as an estimate of the population mean. When you are using a sample statistic to estimate a population characteristic, do you want to sampling variability of the sample statistic to be large or small? Explain why.