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Suppose that you sample 64 high school baseball pitchers in one county and find that they have a mean fastball pitching speed of 85.00 miles per hour (mph) with a standard deviation of 5.98 mph. Find a 99% confidence interval for the mean fastball pitching speed of all high school baseball pitchers in the county. Interpret the interval. Assume that the fastball ball pitching speeds are normally distributed.
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