The Internal Revenue Service wishes to study the time required to process tax returns in three regional centers.A random sample of three tax returns is chosen from each of three centers.The time (in days)required to process each return is recorded as shown below. The appropriate test to use to compare the means for all three groups would be
A)test for independent samples.
B)one-factor ANOVA.
C)repeated two-sample test of means.
D)test for outliers.

Question

The Internal Revenue Service wishes to study the time required to process tax returns in three regional centers.A random sample of three tax returns is chosen from each of three centers.The time (in days)required to process each return is recorded as shown below.  The appropriate test to use to compare the means for all three groups would be
A)test for independent samples. 
B)one-factor ANOVA. 
C)repeated two-sample test of means. 
D)test for outliers.

Quizplus · Accepted Answer

One-factor ANOVA is used to compare the means of three or more groups. The given scenario involves three regional centers and their respective processing times of tax returns. Thus, one-factor ANOVA is the appropriate test to compare the means for all three groups. The other options, i.e., test for independent samples, repeated two-sample test of means, and test for outliers are not suitable for this scenario.

The Internal Revenue Service Wishes to Study the Time Required