Posted by **Anonymous** on Wednesday, December 26, 2012 at 11:39pm.

13. A set of final exam scores in an organic chemistry course was found to be normally distributed, with a mean of 73 and a standard deviation of 8. What is the probability of getting a score higher that 71 on this exam?

- math -
**Damon**, Thursday, December 27, 2012 at 12:18am
73-71 = 2

2/8 = .24 sigma below mean

go to normal distribution table

.5948 of distribution is below .24 sigma above mean

- math -
**Anonymous**, Tuesday, August 5, 2014 at 12:53am
55

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**Brandon**, Sunday, July 26, 2015 at 11:25am
Z =Variable - Mean/ Standard deviation

Z =71-73/8

Z =-2/8

Z = -0.25

Z value -.25 = .401294

To find higher than 71

1 - .401294 = 0.5987

59.87 % will get a score higher than 71 on this exam.

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