Friday

December 19, 2014

December 19, 2014

Posted by **Anonymous** on Friday, June 4, 2010 at 6:39pm.

normal distribution with a mean of 5.5 minutes and a standard deviation of 1 minute. Find the

probability that a randomly selected college student will take between 4.0 and 6.5 minutes to find a

parking spot in the library lot.

- Math for educators -
**Damon**, Friday, June 4, 2010 at 8:00pm4-5.5 = -1.5

z =-1.5/1 = -1.5 or 1.5sigma below mean

6.5 - 5.5 = 1

z = 1/1 = 1 sigma above mean

so what fraction of a normal distribution lies between z = -1.5 and z = + 1?

from table

F(-1.5) = .067 are below -1.5

F(1) = .841 are below +1

so .842-.067 are between

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