Suppose inter-arrival times at a hospital emergency room during a weekday are exponentially distributed, with an average inter-arrival time of nine minutes. If the arrivals are Poisson distributed, what would the average number of arrivals per hour be? What is the probability that less than five minutes will elapse between any two arrivals?
Answer to relevant QuestionsSuppose the average speeds of passenger trains traveling from Newark, New Jersey, to Philadelphia, Pennsylvania, are normally distributed, with a mean average speed of 88 miles per hour and a standard deviation of 6.4 miles ...According to the Polk Company, a survey of households using the Internet in buying or leasing cars reported that 81% were seeking information about prices. In addition, 44% were seeking information about products offered. ...Shown here is a Minitab output. Suppose the data represent the number of sales associates who are working in a department store in any given retail day. Describe the distribution including the mean and standard deviation. ...For each of the following research projects, list at least one area or cluster that could be used in obtaining the sample.a. A study of road conditions in the state of Missourib. A study of U.S. offshore oil wellsc. A study ...Suppose the average checkout tab at a large supermarket is $65.12, with a standard deviation of $21.45.Twenty-three percent of the time when a random sample of 45 customer tabs is examined, the sample average should exceed ...
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