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Homework answers / question archive / Suppose you are an employee with the Ministry of Transport
Suppose you are an employee with the Ministry of Transport. The Ministry is interested in determining whether significant road maintenance is necessary on a particular stretch of road. In addition to assessing current damage to the road, the ministry would like an accurate understanding of the frequency with which the road is used, and they give you the task of figuring this out. You set up a camera to record passing vehicles for an entire year, and find that on average, 110 vehicles pass the camera per day, with a standard deviation of 4 vehicles. Let X = the number of vehicles that pass the intersection per day.
b) [1 mark] What is the probability that in a random sample of 40 days, 50 cars pass the intersection on average? Please note a single number will do. Don't show any work.
Answer: _0___ ( is it right)
c) [1 mark] What is the probability that in a random sample of 40 days, 10 cars pass the intersection on average? Please note a single number will do. Do not show any work.
Answer: __4__( is it?)