An airline promotion to business travelers is based on the assumption that no more than two-thirds of business travelers use a laptop computer on overnight business trips.

A. What is the sample proportion from an American Express sponsored survey that found 355 of 546 business travelers use a laptop computer on overnight business trips (to 4 decimals)?

B. What is the p-value (to 4 decimals)? Hint: you need to find the test statistics first before you calculate the p-value.