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Get Full Access to Basic Statistics For Business And Economics - 7 Edition - Chapter 2 - Problem 18e
Get Full Access to Basic Statistics For Business And Economics - 7 Edition - Chapter 2 - Problem 18e

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# Ecommerce.com, a large Internet retailer, is studying the

ISBN: 9780077384470 64

## Solution for problem 18E Chapter 2

Basic Statistics for Business and Economics | 7th Edition

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Problem 18E

Problem 18E

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?

c. What are the coordinates of the first class for a frequency polygon?

d. Draw a histogram.

e. Draw a frequency polygon.

f. interpret the lead times using the two charts.

Step-by-Step Solution:

Problem 18E

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?

c. What are the coordinates of the first class for a frequency polygon?

d. Draw a histogram.

e. Draw a frequency polygon.

f. Interpret the lead times using the two charts.

Step by step solution

Step 1 of 6

a. The table shows lead time of sampled orders. It is a 2 x 7 table with top row displaying headers; leading time and frequency of orders.

The total orders sampled for the study is the sum of all frequencies  in second column, that is,

Hence, total orders studied are 40.

Step 2 of 6

Step 3 of 6

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