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

question 33

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 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

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Definitions:

Inventory

All raw materials, components, completed or partially completed products, and pieces of equipment a firm uses.

Formal Operational Thought

The stage of cognitive development, according to Piaget, characterized by the ability to think abstractly, logically, and systematically.