a. Whenn>30and the population standard deviation isnot known, what is the appropriate distribution?

A. t

B. z

C. s

D. p

b. Which of the following is the best estimator of a population proportion?

A. sample mean

B. Sample Proportion

C. Standard error

D. Margin of Error

c. What is the process of solving for the upper limitof the interval estimates?

d. Which of the following refers to the standard deviation of the sampling distribution of sample means?