A sample of 75 information system managers had an average hourly ...

[ericka1]

A sample of 75 information system managers had an average hourly income of 40.75 with a standard deviation of 7.00 . The 95 confidence interval for the average hourly wage of all information system managers is
 a. 40.75 to 42.36
  b. 39.14 to 40.75
  c. 39.14 to 42.36
  d. 30 to 50

Question 2

A sample of 75 information system managers had an average hourly income of 40.75 with a standard deviation of 7.00 . The value of the margin of error at 95 confidence is
 a. 80.83
  b. 7
  c. 0.8083
  d. 1.611

[asware1]

Answer to Question 1

C

Answer to Question 2

D