Calls received by a car rescue service occur independently and at a constant average rate of...
The number of calls arriving at a call center are received at a rate of 5 calls per minute. So: I. The expected time that elapses between calls is 15 seconds. II. The probability that between consecutive calls elapse at most 10 seconds is 0.4346. a. Both are correct. b. None is correct c. Only I is correct d. Only II is correct
suppose the number of deaths of a certain cockroach population occur independently at a rate of 3 deaths/day i) find the probability of having 3 cockroach deaths in a day ii) if we consider a 20 day sample period, what is the probability that at most 2 of these days have less than 3 deaths? iii) if we consider a random sample of 42 days, what is the probability that the average number of deaths/day is less than 2.5?
Assg11. The average number of calls received by a switchboard in a 30-minute period is 20 a. What is the probability that between 10:00 and 10:30 the switchboard will receive exactly 10 calls? b. What is the probability that between 10:00 and 10:30 the switchboard will receive more than 9 calls but fewer than 15 calls? c. What is the probability that between 10:00 and 10:30 the switchboard will receive fewer than 7 calls?
1) The number of calls received at a certain information desk has a Poisson Distribution with an average of 6 calls per hour. (15 points) (a) Find the probability that there is at exactly one call during a 15 minute period. (You cannot use tables here - show all work) (b) Find the probability that at least 6 calls are received during a 30 minute period. (you may use tables here) ******************************** 2) Note that for the above problem, the...
Use Poisson Distribution to solve problems 6-7 6. The number of calls received by a car towing service averages 1.25 per hour Use the Poisson distribution to find the probability that in a randomly selected hour the number o calls is 2. Show the result of probability calculations and circle one of the multiple choice answers. (6 points) A) 0.1865 B) 0.2238 C) 0.1586 D) 0.3524
At an estate agent, house sales occur randomly and independently at an average rate of 2 sales per week. Find the probability of observing at least 3 sales in a given fortnight at the estate agent.
The average number of calls received by a switchboard in a 30 minute period is 20. (A) What is the probability that between 10 and 10:30 the switchboard will recieve exaxtly 5 calls? (B) What is the probability that between 10 and 10:30 the switchboard will recieve more than 9 calls but less than 15 calls? (C) What is the probability that between 10 and 10:30 the switchboard will receive less than 7 calls?
3) The number of requests for assistance are received by a towing service at an average steady rate of 4 per hour. If, during a normal day the requests are received independently of one another, compute the probability that exactly ten requests are received during a particular 2-hour period of a normal day. Suppose, that the dispatcher ignored at least one call between 225pm and 2:45pm. What is the probability that no more than one call was received during this...
6. Service calls come to a maintenance center are 3 per minute on the average. Find the probability that no more than 4 calls come in a given minute: b. between 3 to 10 calls come in a given minute: more than 10 calls come in a 4-minute period. a. с.
The average number of calls from a maintenance center is 162 per hour. Find the probability that (a) more than 4 calls come in any one minute; (b) fewer than 2 calls come in any one minute; (c) more than 3 calls come in a 5-minute period.