7. The posted speed limit on Interstate 70 near Hays, KS is 75 miles per hour, b

Question

7. The posted speed limit on Interstate 70 near Hays, KS is 75 miles per hour, but it is claimed that the mean of the actual speeds of vehicles is greater than 75 miles per hour. Describe the Type I error you could make if you test this claim through a formal hypothesis test on collected data. 7. The posted speed limit on Interstate 70 near Hays, KS is 75 miles per hour, but it is claimed that the mean of the actual speeds of vehicles is greater than 75 miles per hour. Describe the Type I error you could make if you test this claim through a formal hypothesis test on collected data.

Explanation / Answer

Type I error is rejecting the true null hypothesis.

So,

In this scenario, type I error will be:

Conclude that the mean of the actual speeds of vehicles is greater than 75 miles per hour whereas the actual mean speed is less than or equal to 75.

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