The average number of calls received by a switchboard in a 30-minute period is 15. What is the probability that between 10:00 and 10:15 the switchboard will receive more than 9 calls but fewer than 15 calls?
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The average number of calls received by a switchboard in a 30-minute period is 15. a. What is the probability that between 10:00 and 10:10 the switchboard will receive exactly 10 calls? b. What is the probability that between 10:00 and 10:15 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? Please show working.
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The average number of calls received by a switchboard in a 30-minute period is 13. a. What is the probability that between 10:00 and 10:10 the switchboard will receive exactly 10 calls? b. What is the probability that between 10:00 and 10:15 the switchboard will receive more than 10 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?
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An ambulance service receives an average of 15 calls per day during the time period 6 p.m. to 6 a.m. for assistance. For any given day what is the probability that fewer than 10 calls will be received during the 12 -hour period? What is the probability that more than 17 calls during the 12-hour period will be received?
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