1.) How does the mean of X-bar compare to the mean of X?

Group of answer choices

A.) mean of X-bar is smaller

B.) they are equal

C.) mean of X-bar is larger

2.) When do you need to use the Central Limit Theorem?

Group of answer choices

A.) When X is normal and n is any normal

B.) When X is not normal and n >30

C.) When X is normal and n >30

D.) When X is not normal and n is any number

3.) The t-value in a confidence interval for mu when sigma is unknown is larger than the Z-value in a confidence interval for mu when sigma is known. Assume everything else is the same.

Group of answer choices

A.) True

B.) False