Question 1 ( 30 mark )

• Knowing that arrival rate l to Tim Hortons is 10 person per half an hour while service rate m is 30 person s per hour.. Calculate the following

1 _ Average number of persons waiting in the line?

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2- Average number of people waiting in the system?

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Question 2( 30 mark )

Calculate the percentage of non perfect orders knowing that 100000 orders been processed last year with 10000 orders considered failed and can't be fixed ? comment on your results ?

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Question 3( 40 mark )

The following are the orders processed during the last 5 weeks for a Canadian logistics company ,the owner need to forecast using linear regression model how will be the orders by week 15 , data of the previous 5 weeks are represented in the following table :what are the advantages of linear regression model ?

Week	1	2	3	4	5
Sales with millions	3	4	3	12	8

x= 15 y=30 xy=108 x^2=55

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