TABLE 11-1
An airline wants to select a computer software package for its reservation system. Four software packages (1, 2, 3, and 4) are commercially available. The airline will choose the package that bumps as few passengers as possible during a month. An experiment is set up in which each package is used to make reservations for 5 randomly selected weeks. (A total of 20 weeks was included in the experiment.) The number of passengers bumped each week is obtained, which gives rise to the following Excel output:

-Referring to Table 11-1, the total degrees of freedom is
A) 3.
B) 4.
C) 16.
D) 19.

Question

TABLE 11-1
An airline wants to select a computer software package for its reservation system. Four software packages (1, 2, 3, and 4) are commercially available. The airline will choose the package that bumps as few passengers as possible during a month. An experiment is set up in which each package is used to make reservations for 5 randomly selected weeks. (A total of 20 weeks was included in the experiment.) The number of passengers bumped each week is obtained, which gives rise to the following Excel output:
 
-Referring to Table 11-1, the total degrees of freedom is
A) 3. 
B) 4. 
C) 16. 
D) 19.

Quizplus · Accepted Answer

The total degrees of freedom can be calculated as (number of treatments - 1) x (number of weeks - 1). In this case, there are 4 treatments (software packages) and 20 weeks, so the total degrees of freedom is (4-1) x (20-1) = 19.

To determine the best choice for the airline, we need to look at the bumping data for each software package and calculate the mean number of passengers bumped for each package. The package with the lowest mean number of bumped passengers would be the best choice for the airline. However, this data is not provided in the given information, so we cannot determine the best choice.

TABLE 11-1 an Airline Wants to Select a Computer Software Package for Package