Your current exam mean is 97.2.If you receive a 99 on the next exam,what will happen to your mean?

A) It has no effect.
B) It will decrease
C) It will increase.
D) It cannot be determined.

The Dawsons are refinancing their 20-year mortgage of $200,000 after five years. They have decided to increase their monthly payment by $300. If interest is 5.25% compounded quarterly, by how much will the Dawson's reduce the amortization period of their mortgage?

Using the following information, calculate the z-statistic for the z-test for one mean. = 31.75 μ = 25.67 = 2.45

A) 2.48
B) -2.48
C) .10
D) -.10