SCENARIO 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 Scenario 11-1,at a significance level of 1%,
A)there is insufficient evidence to conclude that the mean number of customers bumped by the 4 packages are not all the same.
B)there is insufficient evidence to conclude that the mean number of customers bumped by the 4 packages are all the same.
C)there is sufficient evidence to conclude that the mean number of customers bumped by the 4 packages are not all the same.
D)there is sufficient evidence to conclude that the mean number of customers bumped by the 4 packages are all the same.

Question

SCENARIO 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 Scenario 11-1,at a significance level of 1%,
A)there is insufficient evidence to conclude that the mean number of customers bumped by the 4 packages are not all the same. 
B)there is insufficient evidence to conclude that the mean number of customers bumped by the 4 packages are all the same. 
C)there is sufficient evidence to conclude that the mean number of customers bumped by the 4 packages are not all the same. 
D)there is sufficient evidence to conclude that the mean number of customers bumped by the 4 packages are all the same.

Quizplus · Accepted Answer

We will conduct a one-way ANOVA test as we are comparing the means of more than two groups. 
Null hypothesis: The mean number of customers bumped by the 4 packages are all the same.
Alternate hypothesis: The mean number of customers bumped by the 4 packages are not all the same.
We will use a significance level of 1%, which means alpha = 0.01. 
The p-value obtained from the ANOVA test is 0.0005 which is less than alpha, so we reject the null hypothesis. Therefore, we have sufficient evidence to conclude that the mean number of customers bumped by the 4 packages are not all the same.

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