The finish times for marathon runners during during a race are normally distributed with a mean of

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The finish times for marathon runners during during a race are normally distributed with a mean of 200 minutes and a standard deviation of 60 minutes.

a) What is the probability that a runner will complete the marathon within 6 hours?

b) Calculate to the nearest minute, the time by which the first 9% runners have completed the marathon.

c) What proportion of the runners will complete the marathon between 1 hours and 4 hours?

Related Book For answer-question

Elementary Statistics

ISBN: 978-0321691231

8th edition

Authors: Neil A. Weiss

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Posted Date: Jan 06, 2021 06:48 AM

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The finish times for marathon runners during during a race are normally distributed with a mean of

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u 200 60 We convert this to standard normal as P X x P Z x u a P X 6 hours P X 360 min P Z 360 2... View the full answer

Elementary Statistics

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