Help please! 1. 2.2/3.33 points 1 Previous Answers llo 17.HV0.082 Suppose that t
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Help please!
1. 2.2/3.33 points 1 Previous Answers llo 17.HV0.082 Suppose that the distance of fly balls hit to the outfieeb) is normally distributed with a mean of 242 feet and a standard deviation of 42 feet. We randomly sample 49 fly balls. Part (a) lfaverage distance in feet for 49 fly balls, then give the distribution of Round your standard deration to two decimal places. 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.) 1022 Sketch the graph. Scale the horizontal axis for X. Snade the region corresponding to the probability. 225 230 235 240 245 250 255 260 225 230 235 240 245 250 255 260 225 230 235 240 245 250255 260 225 230 235 240 245 250 255 260 Part (c) Find the 60th percentile of the distribution of the average of 49 fy balls. (Round your answer to two decimal places.)Explanation / Answer
mean is 242 and standard error is SE=s/sqrt(N)=42/sqrt(49)=6
for 60% the z value is 0.26 from normal distribution table
thus answer is mean+z*SE= 242+6*0.26=243.56
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