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Question: Travel and Transportation The U.S. Transportation Security Administration (TSA) screens approximately 1.8 million travelers in the nation's airports each day. All carry-on and checked baggage is carefully screened, and every passenger must pass through a metal detector or an advanced imagingtechnology scanner. The agency claims that approximately 3% of all passengers are patted down.31 In a random sample of 478 airline passengers, 31 were patted down.

a. Find a 99% confidence interval for the true proportion of airline passengers who are patted down.

b. Is there any evidence to suggest the TSA claim is false? Justify your answer.

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