All possible random samples of 200 middle managers are selected ...

[nelaaney]

All possible random samples of 200 middle managers are selected from a population for a study concerning their mean annual income. The population standard deviation is computed to be 2,248.5.
 
  What is the standard deviation of the sampling distribution of the means?A) 47.42
  B) 11.24
  C) 158.99
  D) 57.86

Question 2

Internal data might include all of the following except ________.
 
  A) material costs
  B) economic conditions
  C) accounts receivable
  D) sales.

[huda]

Answer to Question 1

C

Answer to Question 2

B

[nelaaney]

Wow, this really help

[miss.ashley]

Thanks for the timely response, appreciate it