Exhibit 8-6 A Sample of 75 Information System Managers Had an Average

Multiple Choice

Exhibit 8-6
A sample of 75 information system managers had an average hourly income of $40.75 with a standard deviation of $7.00.
-Refer to Exhibit 8-6. The value of the margin of error at 95% confidence is

A) 80.83
B) 7
C) 0.8083
D) 1.611