Question

Part A. You are asked to calculate the confidence interval of a population mean. Which of the following are required?

a. A confidence level

b. An estimate of the variance of the population

c. A point estimate of the population mean

d. All of the above are needed.

Part B. Sample size determination can be defined as choosing the number of observations to include in a statistical sample.

a. True

b. False

Answer 1

A

Part A.

Answer:-

Option (d) is correct.

a. A confidence level

b. An estimate of the variance of the population

c. A point estimate of the population mean

d. All of the above are needed.

Part B.

Answer:-

b. False

Because, in statistical sample there is population size(N)

and we have to choose sample size (n)