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5 points
QUESTION 141.
Customers arrive every three minutes governed by a Poisson distribution. A single server is capable of handling 30 customers per hour and this service time is exponentially distributed. What is the likelihood that more than 4 customers are in the system?
Answer
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[removed] |
less than or equal to .1 |
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greater than 0.1 but less than or equal to 0.15 |
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greater than 0.15 but less than or equal to 0.25 |
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greater than 0.25 but less than or equal to 0.32 |
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Greater than 0.32 |
5 points QUESTION 151.
A trucking company has 5 trucks that each requires service at an average rate of once every 40 hours, according to an exponential distribution. The firm has a mechanic who needs 5 hours to complete the average job with exponential service times. What is the probability that there will be no trucks in the system?
Answer
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less than or equal to 0.50 |
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greater than 0.50 but less than or equal to 0.60 |
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greater than 0.60 but less than or equal to 0.70 |
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greater than 0.70 |
5 points QUESTION 161.
A trucking company has 5 trucks that each requires service at an average rate of once every 40 hours, according to an exponential distribution. The firm has a mechanic who needs 5 hours to complete the average job with exponential service times. What is the average utilization of the mechanic?
Answer
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less than or equal to 50 percent |
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greater than 50 percent but less than or equal to 60 percen |
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greater than 60 percent but less than or equal to 70 percent |
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greater than 70 percent |
