Mathematics, 05.05.2020 05:06 tadvet1633
The marketing manager for an automobile manufacturer is interested in determining the proportion of new compact-car owners who would have purchased a passenger-side inflatable air bag if it had been available for an additional cost of $300. The manager believes from previous information that the proportion is 0.30. Suppose that a survey of 200 new compact-car owners is selected and 79 indicate that they would have purchased the inflatable air bags. If you were to conduct a test to determine whether there is evidence that the proportion is different from 0.30, which test would you use?
a. Z-test of a population mean
b. Z-test of a population proportion
c. T-test of population mean
d. T-test of a population proportion
Answers: 2
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