Question

For a sample of 50 days, George Murnen made an average of 5.02 calls per day. At the .05 significance level, is there a difference in the mean number of calls per day between the two employees? What is the p-value?

Answer 1

http://www.khanacademy.org/math/statistics-probability

Jiskha doesn't have a statistics prof at present, but you may find lessons and methods of calculation in Khan Academy's statistics section.