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

[fahad]

A sample of 75 information systems 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 (in ) of all information system managers is
 a. 38.61 to 42.89.
   b. 39.40 to 42.10.
   c. 39.14 to 42.36.
   d. 37.54 to 43.96.

Question 2

For the Wilcoxon signed-rank test,
 a. differences of 0 are discarded.
 b. there are no assumptions made about the population distribution.
  c. a skewed population is preferred.
  d. ties among absolute differences are assigned positive signed ranks.

[paavo]

Answer to Question 1

c

Answer to Question 2

a

[fahad]

Excellent

[jackie]

Gracias!