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Question
The table below shows data on research to examine the perception of business ethics among 3 groups of employees (higher score indicates higher ethical values).
A B C
6 5 6
5 5 7
4 4 6
5 4 5
5 5 6
4 6 6
6 5 4
5 6 5
a. State the null and alternative hypothesis for single factor ANOVA to test for any significant difference in the perception among three groups.
b. State the decision rule at 5% significance level.
c. Calculate the test statistic.
d. Based on the calculated test statistics decide whether any significant difference in the mean price of gasoline for three bands.
Note: No excel ANOVA output allowed. Students need to show all the steps in calculations.
A relationship does not exist in the observed sample, but an analysis of the sample shows that there is a statistically significant relationship.
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Determine whether such subjects do better, on the average, than expected by just guessing and perform the statistical test
Examples of allowable passwords are: 1aaa, acd2, x2z2a. On the other hand, passwords such as aabcd, absda are not allowable.
(a) Perform the appropriate analysis to test whether there is an effect due to door color.
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