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Question 1: a) A store has an average of 25 people arriving each minute to checkout and each person on the average require 4 minutes to be processed at the checkout. What is the minimum number of cashiers required?
b) For the above question, what is the minimum number of cashiers required to get the average wait to be less 1 minute? Question 2: a) The number of passengers arriving at an airport terminal average 1200 each hour. To process passengers (check in, take luggage, etc) take an average of 6 minutes each. There are 6 airport staffers processing passengers. How long is the average wait for each passenger?
b) For the above question, on average how many passengers are waiting in line? c) For the above question, if one airport staffer called in sick, how much longer is the average wait for passengers? Question 3: In a typical 8 hour work day, 24 customers arrive per hour and the cashier can handle 30 each hour.
a.How much time will this cashier be idle on the average? b) What recommendations could you make to the store in question a) above in light of the queue characteristics? Be specific and make sure the recommendations tie directly to the answers you gave. c) What are some of the likely mistakes people make when applying Queuing Theory to a grocery store? d) Give an example of an actual queue you have seen in which the waiting line grew at a rate faster than can be processed. e) In the queue you mentioned in question I above, what concrete recommendations would have alleviated the problem you observed? Explain why these recommendations would solve the problem?
The cholesterol concentration in the yolks of each of a sample of 22 randomly selected eggs laid by free range chickens were found to have a mean value of 9.38 mg/g of yolk and a standard deviation of 1.62 mg/g.
A researcher predicts that the percentage of people who do no watch TV is higher now than before the advent of the Internet. Let the p1 denote the population proportion of American adults in 1975 who reported watching no TV. Let p2 denote the corresp..
Sampling area consisted of an area of 120m x 50m within site two and was bordered by a road on one side and a stream on another.
Compute the coefficient of determination for bone loss and women's age and describe what this statistic means.
A recent study of 25 students showed that they spent an average of $18.53 for gasoline per week. the standard deviation of the sample was $3.00. find the 95% confidence interval of the true mean.
At the 5% level of significance, can we infer that branch A has a significantly higher proportion of satisfied customers than branch B?
An insurance company states that 90% of its claims are settled within 5 weeks. A consumer group selected a random sample of 100 of the company's claims and found 75 of the claims were settled within 5 weeks.
Market researchers would like to know if customers prefer a well-known brand over a generic brand of soft drink. They give a large sample of people the two drinks to taste in a random order and ask them which one tastes better.
The Atlanta Convention & Visitors Bureau just released a report on the percentage of available hotel rooms in Fulton County that were rented (occupied) in 2003.
Given that the safety conditions at the plant remain the same next year, what is the probability that the number of serious injuries will be less than 2?
If Z = 1.96, s = 3, and E = 1, determine the correct sample size.
For any hypothesis test, if the value of a parameter being tested falls outside the confidence interval for the same level of a, the correct decision is to reject the null hypothesis. Is this True or False?
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