Chapter 6: Example Problems
Example Problems
19. For a car traveling 30 mph, the distance required to brake to stop is normally distributed with a mean of 50 feet and a standard deviation of 8 feet. Suppose you are traveling 30 mph and a car moves abruptly into your path at a distance of 60 feet.
If you apply your brakes, what is the probability that you will break to a stop within 40 ft or less?
Let X = stopping distance in feet
Given
1) the mean of X (i.e. the mean stopping distance): μ= 50 feet
2) the standard deviation of X: σ= 50 feet
a) Find: P(X ................
................
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