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Construction zones Every road has one at some pointconstruction zones that have much
Chapter 9, Problem 73(choose chapter or problem)
Construction zones Every road has one at some pointconstruction zones that have much lower speed limits. To see if drivers obey these lower speed limits, a police officer uses a radar gun to measure the speed (in miles per hours, or mph) of a random sample of 10 drivers in a 25 mph construction zone. Here are the data: 27 33 32 21 30 30 29 25 27 34 (a) Is there convincing evidence that the average speed of drivers in this construction zone is greater than the posted speed limit? (b) Given your conclusion in part (a), which kind of mistakea Type I error or a Type II errorcould you have made? Explain what this mistake would mean in context.
Questions & Answers
QUESTION:
Construction zones Every road has one at some pointconstruction zones that have much lower speed limits. To see if drivers obey these lower speed limits, a police officer uses a radar gun to measure the speed (in miles per hours, or mph) of a random sample of 10 drivers in a 25 mph construction zone. Here are the data: 27 33 32 21 30 30 29 25 27 34 (a) Is there convincing evidence that the average speed of drivers in this construction zone is greater than the posted speed limit? (b) Given your conclusion in part (a), which kind of mistakea Type I error or a Type II errorcould you have made? Explain what this mistake would mean in context.
ANSWER:Step 1 of 3
Data given is
[27 33 32 21 30 30 29 25 27 34]
The sample mean is
Standard deviation:
