The 'assumption of normality' refers to ______.

A) the shape of the distribution for a variable
B) people's behavior and personality
C) descriptive statistics
D) the nature of the relationship between samples and populations

For the standard normal probability distribution, the area to the right of the mean is

A) 1.
B) 3.09.
C) 1.96.
D) 0.5.

Monthly payments of $484.99 are to be made on a loan of $20,000 at 7.7% compounded quarterly for four years. How much principal is paid off in the 20^th payment?

When s is used to estimate σ, the margin of error is computed by using the

A) normal distribution.
B) t distribution.
C) mean of the sample.
D) mean of the population.

What monthly compounded nominal rate would put you in the same financial position as 5.5% compounded semiannually?