Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 145 minutes with a standard deviation of 12 minutes. Consider 49 of the races. Let X= the average of the 49 races. Part (a) Give the distribution of X. (Round your standard deviation to two decimal places.) X-N ✔ 145✔ 1.71✔ Part (b) Find the probability that the average of the sample will be between 144 and 147 minutes in these 49 marathons. (Round your answer to four decimal places.) 5960 x Part (c) Find the 60th percentile for the average of these 49 marathons. (Round your answer to two decimal places.) 145.54 xmin

Suppose that a category of world class runners are known to run a marathon (26 miles) in an average of 145 minutes with a standard deviation of 12 minutes. Consider 49 of the races. Let X= the average of the 49 races. Part (a) Give the distribution of X. (Round your standard deviation to two decimal places.) X-N ✔ 145✔ 1.71✔ Part (b) Find the probability that the average of the sample will be between 144 and 147 minutes in these 49 marathons. (Round your answer to four decimal places.) 5960 x Part (c) Find the 60th percentile for the average of these 49 marathons. (Round your answer to two decimal places.) 145.54 xmin

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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