# Inference

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An airline promotion to business travelers was based on the assumption that over two-thirds of business travelers use a laptop computer on overnight business trips. What can you conclude based on the results of an American Express on-line survey that reported 355 of 546 business travelers using a laptop computer on overnight business trips? What is the p-value of the test?

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##### Solution Summary

This solution determines the p-value of a test.

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This is a test of proportion.

Let q be the proportion of travelers using a laptop computer, then:

The sample shows q = 355/546 = 0.650

Ho: q = 2/3 = 0.667

Ha: q ≠ ...

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