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Answer: In Exercise, use the following information. On a
Chapter , Problem 48E(choose chapter or problem)
Use the following information. On a dry surface, the braking distances (in feet), from 60 miles per hour to a complete stop, of a sedan can be approximated by a normal distribution, as shown in the figure at the left. (Adapted from Consumer Reports)
What braking distance of a sedan represents the third quartile?
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QUESTION:
Use the following information. On a dry surface, the braking distances (in feet), from 60 miles per hour to a complete stop, of a sedan can be approximated by a normal distribution, as shown in the figure at the left. (Adapted from Consumer Reports)
What braking distance of a sedan represents the third quartile?
ANSWER:Step 1 of 2
The braking distances (in feet), from 60 miles per hour to a complete stop, of a sedan can be approximated by a normal distribution, the graph is
Our goal is:
We need to find braking distance of a sedan represents the third quartile.
From the given information the third quartile has a probability or area of 75% or 0.75 to its left.
Now we have to determine the z-score corresponding to the probability of 0.75.
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