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Question 385:

Given that the traveling distance for a population of college students is normally distributed with the mean of 10 kilometers and standard deviation equal to 3: Use the normal distribution to solve the following.

a) what proportion live within 12 kilometers of the campus
b) what proportion live further than 15 kilometers from campus
c) what distance would give the closest 10%
d) what distance would give the furthest 33%

If you need help with the concepts covered in this question (like z-scores and the normal-curve) you can download a visual and easy to understand Crash Course in Z-scores and an Excel Calculator which will do everything you need to do with z-scores.

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