What percentage of operations last between 142 198 minutes? - ProProfs Discuss
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What percentage of operations last between 142-198 minutes?

If the duration of a heart operation is a normally distributed random variable with mean 170 minutes and standard deviation 14 minutes.

Asked by Stickrathbrent, Last updated: Apr 09, 2024

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2 Answers

John Adney

John Adney

John Adney
John Adney

Answered Sep 14, 2017

I know I'm missing something, but I'm not sure what exactly it is...

I'm assuming the phrase "normally distributed random variable" is supposed to explain how to calculate this, but how do you calculate the full range of the data? My guess was 68%, but it was honesly just a guess.

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John Smith

John Smith

John Smith
John Smith

Answered Oct 30, 2016

95%
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