Mathematics, 31.03.2021 21:20 operrt
According to the AAA Foundation for Traffic Safety's American Driving Survey, U. S. drivers spend.
on average, 51 minutes behind the wheel each day. A researcher believes this is an overstatement.
To investigate, a random sample of 75 drivers were selected. The study revealed that the mean
time behind the wheel for the sample of 75 drivers was 46.4 minutes with a standard deviation of
18.8 minutes. Is there convincing evidence that the mean time behind the wheel for all U. S. drivers
is less than 51 minutes? Use a = 0.01.
Answers: 2
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