For doing the case study you need to respond the following 4 questions, and for required data you will use the Excel files that are attached below(you can see two files one is “question 1,2,3” will be used for questions 1, 2 and 3.)

1- Open the sheet Mc Donald: Waiting Times are very important factor in Drive-Thru ordering system. McDonald has collected the data of 362 costumers in drive-thru ordering line you can find the data set in attached file below.

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a) Construct a frequency distribution, and relative frequency for number of sandwiches was ordered by costumers.

b) What is the probability of getting order with more than 4 sandwiches?

c) Construct a histogram for Customer Waiting Time. Discuss the shape of distribution, is it symmetric or not?

d) Calculate the mean and standard deviation for customer waiting time.

e) If we suppose a Normal distribution for waiting time, what is the chance that customer wait more than 200 seconds in McDonald drive thru?

2- Open the sheet “Airplanes” then use appropriate diagram for discovering the relationship between passenger capacity and fuel consumption. Explain the result.

3-  Open the “Gasoline Prices” worksheet and then use appropriate tool for representing the price trend over the time.

Final reminder: I expect you to send me your worksheet with formulas.

CASE STUDY RUBRICS

Follow me in this video and you should be all set!

questions 1,2,3.xlsx questions 1,2,3.xlsx

For more information on Queue Management System read this: https://en.wikipedia.org/wiki/Queue_management_system

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