4. During a typical Pennsylvania winter, I-80 averages 1.7 potholes per 10 miles. A certain county...
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4. During a typical Pennsylvania winter, I-80 averages 1.7 potholes per 10 miles. A certain county is responsible for repairing potholes in a 30-miles stretch of the interstate. a) Find the probability that the number of potholes the county will have to repair is between 5 and 10 (both inclusive) next winter. b) The cost of repairing a pothole is $5000. Find the mean and variance of the county's pothole repair expense for next winter. 4. During a typical Pennsylvania winter, I-80 averages 1.7 potholes per 10 miles. A certain county is responsible for repairing potholes in a 30-miles stretch of the interstate. a) Find the probability that the number of potholes the county will have to repair is between 5 and 10 (both inclusive) next winter. b) The cost of repairing a pothole is $5000. Find the mean and variance of the county's pothole repair expense for next winter.
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a The probability that the county will have to repair between 5 and 10 potholes next winter i... View the full answer
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Essentials Of Business Statistics Communicating With Numbers
ISBN: 9780078020544
1st Edition
Authors: Sanjiv Jaggia, Alison Kelly
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