Sunday

August 31, 2014

August 31, 2014

Posted by **kabita** on Thursday, February 16, 2012 at 6:49am.

mean of 72 and a standard deviation of 8.

a. What is the proportion of students received a B grade.

b. What is the proportion of students that failed the exam?

c. What is the grade of the 92nd percentile?

- statistics -
**PsyDAG**, Thursday, February 16, 2012 at 11:15amCannot answer a and b unless you know point value for B and F. Once you find the point values, use the equation below.

c. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion (.92) for a Z score. Put Z score and other values into the equation below and solve.

Z = (score-mean)/SD

**Related Questions**

statistics - In a large class, there were 220 students who wrote both the ...

statistics - If the grades on a police entrance exam are normally distributed ...

Statistics - The grades for Economics students at a large university are found ...

statistics - Suppose the amount of time it takes for statistics students to ...

statistics - In one history class, 34 students took an exam. The mean of the ...

Analytical Skills - If your score on a statistics exam was 76 and the professor ...

statistics - Can you please tell me how to solve for the following? Pedro took ...

statistics - Scores on a recent national statistics exam were normally ...

statistics - A final exam in Math 157 is normally distributed and has a mean of ...

Statistics - I am so lost on this statistics question would someone help me ...