Speedy Swift is a package delivery service that serves the

QUESTION:

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 (package delivered within 5 minutes of the promised time), late (package delivered more than 5 minutes past the promised time), lost (package never delivered). Speedy Swift’s objective is to deliver 99 percent of all packages either early or on-time. Another objective is to never lose a package.

Speedy collected the following data for last month’s performance:

\(\begin{array}{|llllllllll}
\hline \text { On-time } & \text { On-time } & \text { Early } & \text { Late } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } & \text { Late } & \text { On-time } \\
\text { Early } & \text { On-time } & \text { On-time } & \text { Early } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } \\
\text { Early } & \text { On-time } & \text { Early } & \text { On-time } & \text { On-time } & \text { On-time } & \text { Early } & \text { On-time } & \text { On-time } & \text { On-time } \\
\text { Early } & \text { On-time } & \text { On-time } & \text { Late } & \text { Early } & \text { Early } & \text { On-time } & \text { On-time } & \text { On-time } & \text { Early } \\
\text { On-time } & \text { Late } & \text { Late } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } \\
\text { On-time } & \text { Late } & \text { Early } & \text { On-time } & \text { Early } & \text { On-time } & \text { Lost } & \text { On-time } & \text { On-time } & \text { On-time } \\
\text { Early } & \text { Early } & \text { On-time } & \text { On-time } & \text { Late } & \text { Early } & \text { Lost } & \text { On-time } & \text { On-time } & \text { On-time } \\
\text { On-time } & \text { On-time } & \text { Early } & \text { On-time } & \text { Early } & \text { On-time } & \text { Early } & \text { On-time } & \text { Late } & \text { On-time } \\
\text { On-time } & \text { Early } & \text { On-time } & \text { On-time } & \text { On-time } & \text { Late } & \text { On-time } & \text { Early } & \text { On-time } & \text { On-time } \\
\text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } & \text { On-time } & \text { Early } & \text { Early } & \text { On-time } & \text { On-time } & \text { On-time } \\
\hline
\end{array}\)

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

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

c. Construct a relative frequency table for delivery performance 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. Analyze the data summaries and write an evaluation of last month’s delivery performance as it relates to Speedy Swift’s performance objectives. Write a general recommendation for further analysis.