Potholes The average number of potholes per 10 miles of paved U.S. roads is 130. Assume this variable is ap- proximately normally distributed and has a standard deviation of 5. Find the probability that a randomly selected road has a. More than 142 potholes per 10 miles b. Less than 125 potholes per 10 miles c. Between 128 and 136 potholes per 10 miles

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Potholes The average number of potholes per 10 miles
of paved U.S. roads is 130. Assume this variable is ap-
proximately normally distributed and has a standard
deviation of 5. Find the probability that a randomly
selected road has
a. More than 142 potholes per 10 miles
b. Less than 125 potholes per 10 miles
c. Between 128 and 136 potholes per 10 miles
Source: Infrastructure Technology Institute.
Transcribed Image Text:Potholes The average number of potholes per 10 miles of paved U.S. roads is 130. Assume this variable is ap- proximately normally distributed and has a standard deviation of 5. Find the probability that a randomly selected road has a. More than 142 potholes per 10 miles b. Less than 125 potholes per 10 miles c. Between 128 and 136 potholes per 10 miles Source: Infrastructure Technology Institute.
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