ECON2300 Homework 3

发布时间：2025-09-23

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ECON2300

Homework 3

1.(MGH CH2 Exercise 4) Two thousand frequent business travelers were asked which Midwestern city they prefer: Indianapolis, Saint Louis, Chicago, or Milwaukee. One hundred liked Indianapolis best, 450 liked Saint Louis, 1,300 liked Chicago, and the remainder preferred Milwaukee. Develop a frequency table and a relative frequency table to summarize this information.

2. The educational attainment of males and females in 2013 was as follows:

(a) Construct a relative frequency table for males.

(b) Construct a relative frequency table for females.

3. (MGH CH2 Exercise 26) Speedy Swift is a package delivery service that serves the greater Atlanta, Georgia, metropolitan area. To maintain customer loyalty, one of Speedy Swift’s performance objectives is on-time delivery. To monitor its performance, each delivery is measured on the following scale: early (package delivered before the promised time), on-time (pack- age delivered within 15 minutes of the promised time), late (package delivered more than 15 minutes past the promised time), or lost (package never delivered). Speedy Swift’s objective is to deliver 99% of all packages either early or on-time. Speedy collected the following data for last month’s performance (See the excel spreadsheet for the data):

(a) What kind of variable is delivery performance? What scale is used to measure delivery performance?

(b) Construct a frequency table for delivery performance for last month.

(d) Construct a bar chart of the frequency table for delivery performance for last month.

(e) Construct a pie chart of on-time delivery performance for last month.

(f) (In 2-3 sentences) Write a memo reporting the results of the analyses. Conclude with a general statement of last month’s delivery performance as it relates to Speedy Swift’s performance objectives.