Word Problem ANSWERS: 1-Way ANOVA #9

 You work for a bottled-water company which is concerned with the quality of its flavored product. The numbers below are the number of complaints received in a 1-hour period.

               Lemon   Lime  Orange  Root Beer 
                    12        1        18         1 
                    13        4          9         2 
                    11        5        12         1 
                    14        3          7         9

Sum X         50       13          46      13        122
Sum X²     630        51       598      87       1366
N                  4          4           4        4          16
SS                 5        8.75     69       44.75   127.50

Since you are interested in which flavor did best, which of the following tests should you perform:

a. t-test
b. ANOVA
c. correlation
d. regression
e. multiple regression

What is the independent variable in this design: flavor

What is the dependent variables in this design: complaints

Based on above data, complete the following summary table:

                  SS       df          ms

Between  308.25     3      102.75

Within     127.50    12      10.63

Total       435.75    15      29.05

F = 9.67

What is the critical value for F = 3.49

Is F significant? Yes

What should be done next? t-tests

NOW YOU CHOOSE
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