5.4 An additional 2000 runners entered the race but did not complete it. Of theserunners, a mail questionnaire was sent to a random sample of 600 and com-pleted by 500. One of the items in this questionnaire asked the respondent toestimate the average number of miles run weekly during the 8 weeks preced-ing the marathon. The mean of the number of miles run was 32.4 withequal to 7.3. A simple random sample of 500 of thestandard deviation10,000 runners completing the marathon yielded 400 respondents who aver-aged 46.8 mites weekly with standard deviation equal to 6.2 miles, What isthe estimated weekly miles run in that period among all those who entered themarathon? 5.1From a simple random serolłogical sample of 1000 runners selected from10,000 who completed the 2007 Chicago Marathon, 35 were found to be posi-tive for steroids and other performance-enhancing drugs. When categorizedby completion time, the results were as follows:CompletionTime (h)No. inNo. PositivePercentagefor DrugsSample100PositiveUnder 2.52525.002.5-4.050071.40Over 4.040030.75Total1000353.50

1. Population 1 Runners participated in Marathon = 10000 Among these participants, 500 were chosen…

Answered: 5.4 An additional 2000 runners entered…

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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