# Math Help - [SOLVED] Probabilistic Analysis

1. ## [SOLVED] Probabilistic Analysis

A notice is posted giving the following information about the distribution of scores:

* Lowest possible score = 0, highest possible score = 150
* Lowest score attained = 17, highest score attained = 146
* mean = 116, median = 120, standard deviation = 20

Assuming that the examination is graded "on the curve", the question is:

Based on the distribution of grades, do you recommend this course?

2. I don't get what you mean. I think whether you would recommmend the course to a person, is largely dependent on the person's standards and ability to do well in the course? Not quite sure though.

3. You can convert from a normal to a standard normal if you know the percentage of A's, B's,...

You would use $Z={X-\mu\over\sigma}$ to transform your percentiles.

4. A+ 3%
a 17%
a- 27%
b+ 19%
b 14%
b- 13%
c+ 5%
c 3%

5. Originally Posted by dxdy
A+ 3%
a 17%
a- 27%
b+ 19%
b 14%
b- 13%
c+ 5%
c 3%