If we knew the population mean and variance, we would expect ...

[joe]

If we knew the population mean and variance, we would expect
 
  a. the sample mean would closely approximate the population mean.
  b. the sample mean would differ from the population mean by no less than 1.96. standard deviations only 5 of the time.
  c. the sample mean would differ from the population mean by no more than 1.64. standard deviations only 5 of the time.
  d. the sample mean would differ from the population mean by more than 1.96. standard errors only 5 of the time.

Question 2

With large samples and a small population variance, the sample means usually
 
  a. will be close to the population mean.
  b. will slightly underestimate the population mean.
  c. will slightly overestimate the population mean.
  d. will equal the population mean.

[shailee]

Answer to Question 1

D

Answer to Question 2

A

[joe]

Excellent

[FergA]

TYSM