TABLE 12-18 The Director of Transportation of a Large Company Is Interested

question 10

Multiple Choice

TABLE 12-18
The director of transportation of a large company is interested in the usage of the company's van pool program.She surveyed 129 of her employees on the usage of the program before and after a campaign to convince her employees to use the service and obtained the following: She will use this information to perform a test using a level of significance of 0.05.
-Referring to Table 12-18,the director now wants to know if the proportion of employees who use the service before the campaign and the proportion of employees who use the service after the campaign are the same.Which test should she use?

• A)χ² test for difference in proportions
• B)Z test for difference in proportions
• C)McNemar test for difference in proportions
• D)Wilcoxon rank sum test

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Definitions:

Negative NPV

A condition where the net present value of all cash flows associated with a project or investment is negative, indicating that it is not financially viable.

Payback Period

The length of time it takes to recover the cost of an investment.

PI

A mathematical constant represented by the symbol π, approximated as 3.14159, or the ratio of a circle's circumference to its diameter in mathematics. Alternatively, if referring to "present indifference" or a concept specific to an industry or study, clarification is needed.

Positive NPV

An indicator that an investment's present value of net cash flows will exceed its initial cost, suggesting profitability.