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Homework answers / question archive / Assignment:  Ecommerce

Assignment:  Ecommerce

Statistics

Assignment: 

Ecommerce.com, a large Internet retailer, is studying the lead time (elapsed time between when an order is placed and when it is filled) for a sample of recent orders. The lead times are reported in days.

 

  Lead Time (days)

Frequency

  0 up to 5

6         

  5 up to 10

7         

  10 up to 15

12         

  15 up to 20

8         

  20 up to 25

7         

 


     Total

40         

 




 

a.

How many orders were studied?

 

b.

What is the midpoint of the first class? (Round your answer to 1 decimal place.)

 

c.

What are the coordinates of the first class for a frequency polygon assuming we draw a frequency polygon using the midpoints? (Round your answer to 1 decimal place.)

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