he amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 23 minutes and a standard deviation of 6 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 20 minut etween 23 and 31 minutes, and (c) more than 30 minutes. 1) The probability that a randomly selected athlete uses a stairclimber for less than 20 minutes is Round to four decimal places as needed.) C

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 23 minutes and a standard deviation of 6 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 20 minutes, (b)
between 23 and 31 minutes, and (c) more than 30 minutes.
(a) The probability that a randomly selected athlete uses a stairclimber for less than 20 minutes is
(Round to four decimal places as needed.)
←
Transcribed Image Text:The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 23 minutes and a standard deviation of 6 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 20 minutes, (b) between 23 and 31 minutes, and (c) more than 30 minutes. (a) The probability that a randomly selected athlete uses a stairclimber for less than 20 minutes is (Round to four decimal places as needed.) ←
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