Question
A particular section of roadway is known to be a speed trap. The speed limit is 35 mph. You would like to know what the
A particular section of roadway is known to be a speed trap. The speed limit is 35 mph. You would like to know what the average speed is of someone who gets ticketed.
The police department gives you a sample of 40 tickets. The mean speed of those ticket is 52.4 mph with a standard deviation of 5.5 mph. Construct a 95% confidence interval for the population mean (population mean would be the average speed of ALL ticketed drivers).
Group of answer choices
50.70 mph < < 54.10 mph
41.62 mph < < 63.18 mph
50.97 mph < < 53.83 mph
50.97 mph < < 54.10 mph
None of these.
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