The frequency distribution of order lead time at Ecommerce.com from Exercise 18 is repeated below. Lead Time

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The frequency distribution of order lead time at Ecommerce.com from Exercise 18 is repeated below.

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 filled in less than 10 days? In less than 15 days?

b. Convert the frequency distribution to a cumulative frequency distribution.

c. Develop a cumulative frequency polygon.

d. About 60% of the orders were filled in less than how many days?

Distribution
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