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Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 238 feet and a standard deviation of 48 feet. We randomly sample 49 fly balls.
-Part (a)
-If X= average distance in feet for 49 fly balls, then give the distribution of X. Round your standard deviation to two decimal places. x~___
( ___ , ____ )
-Part (b)
-What is the probability that the 49 balls traveled an average of less than 230 feet? (Round your answer to four decimal places.)
Find the 80th percentile of the distribution of the average of 49 fly balls. (Round your answer to two decimal places.) ______ ft
How would you use the discriminant function? Provide a concrete example, including detailed explanations, formulas, and necessary visuals.
I. This study provides good evidence that owning a dog is effective in reducing stress.
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