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Using a webcam, a traffic analyst selected a random sample of 800 cars traveling on I-195 in Miami on a

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Using a webcam, a traffic analyst selected a random sample of 800 cars traveling on I-195 in Miami on a weekday morning. Among the 800 cars in the sample, 24% were white. The margin of error for this estimate is 3.0 percentage points.

a. Would you be surprised if a census revealed that 26% of cars on I-195 in Miami on a weekday morning were white? Explain your answer.

b. Explain how the traffic analyst could decrease the margin of error.

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Here n 800 and p 0 24 and margin of error E 0 03 a The co…View the full answer


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Related Book For  answer-question
The Practice Of Statistics

The Practice Of Statistics

ISBN: 9781319113339

6th Edition

Authors: Daren S. Starnes, Josh Tabor

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Question Details
Chapter # 4
Section: Exercises
Problem: 96
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Question Posted: August 12, 2020 04:06:55
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