17.6-9. The Friendly Neighbor Grocery Store has a single check- out stand with a full-time cashier....
A certain small grocery store has a single checkout stand with a full-time cashier manning it. Customers arrive at the stand randomly (i.e. Poisson input process) at a mean rate of 30 per hour. When there is only one customer at the stand, he is processed by the cashier alone, with an expected service time of 1.5 minutes. However, the stock boy has been given standard instructions that whenever there is more than one customer at the stand, he is...
Pete's Market is a small local grocery store with only one checkout counter. Assume that shoppers arrive at the checkout lane according to a Poisson probability distribution, with an arrival rate of 16 customers per hour. The checkout service times follow an exponential probability distribution, with a service rate of 20 customers per hour. The manager’s service goal is to limit the waiting time prior to beginning the checkout process to no more than five minutes. Also the manager of...
Consider a mini-market that has a single cashier who scans the purchased items and places them in bags. Customers have been complaining of the long waiting time. The mini-market manager is worried that this may lead to losing customers and subsequently their business. The manager approached you to find an economical solution to this problem. You avvepted willingly to offer your services for free. First, you started collecting data on inter-arrival and departure times between succesive customers from and to...
Pete's Market is a small local grocery store with only one checkout counter. Assume that shoppers arrive at the checkout lane according to a Poisson probability distribution, with an arrival rate of 9 customers per hour. The checkout service times follow an exponential probability distribution, with a service rate of 15 customers per hour. The manager’s service goal is to limit the waiting time prior to beginning the checkout process to no more than five minutes. Also the manager of...
The mean waiting time to check out in a multi-store supermarket is 9.3 minutes. A sample of 24 customers in one of its busy stores showed that the mean checkout time was 10.1 minutes with a standard deviation of 2.5 minutes. Test a claim that the busy store's checkout time was no different than the overall company's stores checkout time using a 0.01 level of significance. Claim: Busy Store mean 9.3 (using a 01 level of significance))
The waiting time to check out of a supermarket has had a population mean of 9.17 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers. A sample of 50 customers was selected, and their mean waiting time to check out was 7.31 minutes with a sample standard deviation of 4.3 minutes. At the 0.01 level of significance, using the critical...
QUESTION 27 The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 55 minutes and the sample standard deviation was 2 minutes. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 5 minutes The hypothesis to test the manager's concern is: Hops 5, Ha>5 The test statistic is a...
roblem No.3 (30%): Consider a mini-market that has a single sashier who scans the places them in bags. Customers have been complaining about the long waiting time. 1 manager is worried that this may lead to losing customers and subsequently their business. The manager approached you to find an economical solution to this problem. You accepted willingly to offer y services for free. First, customers from and to the mini-market. Your results showed that arrivals and-departures Markovian process. You computed...
The population mean waiting time to check out of a supermarket has been known 10.73 minutes with standard deviation of 5.8 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers (known as the multiple-server queuing system). A sample of 100 customers was selected randomly, and their mean waiting time to check out was 9.52 minutes. A)Is it necessary to assume...
The waiting time to check out of a supermarket has had a population mean of 9.17 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers. A sample of 50 customers was selected, and their mean waiting time to check out was 7.31 minutes with a sample standard deviation of 4.3 minutes. At the 0.01 level of significance, using the p-value...