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Posts: 205
2 weeks ago
All airline passengers must pass through security screenings, but some are subjected to additional searches as well. Some travelers who carry laptops wonder if that makes them more likely to be searched. Data for 420 passengers aboard a cross-country flight are summarized in the table shown. Does it appear that being subjected to an additional search is independent of carrying a laptop computer? Explain.

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Stats: Modeling the World


Edition: 4th
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Posts: 268
2 weeks ago
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Overall, 175 of 420 passengers, or 41.7% were searched. 30 of 72 people carrying laptops were searched, also 41.7%. Carrying a laptop does not change the probability that a passenger is searched, so the events are independent.
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2 weeks ago
Thank you, thank you, thank you!
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2 weeks ago
You're welcome
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