Under what circumstances will the distribution of sample means be ...

[armygirl]

Under what circumstances will the distribution of sample means be normal?
 
  a. It is always normal
  b. Only if the population distribution is normal
  c. Only if the sample size is greater than 30
  d. If the population is normal or if the sample size is greater than 30

Question 2

What symbol is used to identify the standard error of M?
 
  a. M c.
  b.  d. MM

[Swizqar]

Answer to Question 1

D

Answer to Question 2

A

[armygirl]

Thanks for the timely response, appreciate it

[amcvicar]

Gracias!