Tuesday

March 3, 2015

March 3, 2015

Posted by **bikie** on Tuesday, April 12, 2011 at 4:53pm.

Problem:

Each professor in an English class give an A to students scoring above 90 and a F to those scoring below 60.

Professor 1 has a normal distribution with a mean of 74 and standard deviation 7

Professor 2 has a normal distribution with a mean of 78 and standard deviation 18.

Which professor gives the higher proportion of A's?

Thank you for your help!)

- Math -
**PsyDAG**, Wednesday, April 13, 2011 at 12:03pmZ = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the two Z scores.

**Answer this Question**

**Related Questions**

Math - There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class ...

statistics - 10.51 A statistics professor compared the scores of her morning ...

math - Miss C gives a test to the 10 students in her first-period algebra class...

stats - scores on a university examination are normally distributed with a mean ...

math - stat theory says approximately 68% of measurements lie between +- one ...

Statistics - In Professor Smith's statistics course, the correlation between ...

Statistics - Students were given an exam with 300 multiple-choice questions. The...

C++ - class professor {}; class teacher : public virtual professor {}; class ...

Foundations of Measurement - Approximately 400,000 students took the GRE in 2009...

Math - 2500 students take a college entrance exam. The scores on the exam have ...