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Jim McDonald, manager of the fast-food hamburger restaurant McBurger, realizes that providing fast service is a key to the success of the restaurant. Customers who have to wait very long are likely to go to one of the other fast-food restaurants in town next time. He estimates that each minute a customer has to wait in line before completing service costs him an average of 30 cents in lost future business. Therefore, he wants to be sure that enough cash registers always are open to keep waiting to a mini mum. Each cash register is operated by a part-time employee who obtains the food ordered by each customer and collects the payment. The total cost for each such employee is $9 per hour. During lunch time, customers arrive according to a Poisson process at a mean rate of 66 per hour. The time needed to serve a customer is estimated to have an exponential distribution with a mean of 2 minutes. Determine how many cash registers Jim should have open during lunch time to minimize his expected total cost per hour.
What is the optimal lot size in order to minimize the sum of annual ordering costs and inventory carrying costs of polyurethane? What is the total annual cost based on your optimal lot size?
Many people do not "like" or "trust" single point estimates for things they need measured.
Standard deviation of 6.9 centimeters.assuming that the heights are recorded to the nearest half-cm, how many of these students would you expect to have heights less than 160.0 centimeters.
why is the trend commonly thought to be the most important component of forecasting? how is the linear trend method
let x be a poisson random variable with mean 20.a use the markov inequality to obtain an upper bound on p p x gt 26b
the 2003 statistical abstract of the united states reported the percentage of people 18 years of age and older who
Compute the 90% confidence interval about m if the sample size, n, is 55. How does does increasing the sample size affect the margin of error, E?
You are estimating the install hours for an electronics upgrade based on the number of components affected. The upgrade for which you are estimating affects 25 components. Given the following equation, select the correct response from each pair.
Determine whether the description corresponds to an observational study or an experiment. Thirty university students are divided into two groups, one group receives free tutoring in mathematics, the other does not.
i have an assignment coming up on july 2nd that consists of 15 tf 15 mc and 10 essay questions. tf and mc dont require
The distribution of diastolic blood pressures for the population of female diabetics between the ages of 30 and 34 has an unknown mean μd and a standard deviation σd = 9.1 mm Hg.
Calculate the expected revenue from a first-price auction as a function of the reserve price.
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