Question: An automotive researcher wanted to estimate the difference in distance

An automotive researcher wanted to estimate the difference in distance required to come to a complete stop while traveling 40 miles per hour on wet versus dry pavement. Because car type plays a role, the researcher used eight different cars with the same driver and tires. The braking distance (in feet) on both wet and dry pavement is shown in the table in the next column. Construct a 95% confidence interval
for the mean difference in braking distance on wet versus dry pavement where the differences are computed as “wet minus dry.” Interpret the interval.

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  • CreatedApril 28, 2015
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