In: Statistics and Probability
The following is sample information. Test the hypothesis that the treatment means are equal. Use the 0.02 significance level.
Treatment 1 Treatment 2 Treatment 3
10 3 4
4 8 8
3 7 8
8 5 6
a. State the null hypothesis and the alternate hypothesis.
H0: The treatment means are the same OR the treatment means are not all the same ?
H1: The treatment means are not all the same OR the treatment means are the same ?
b. What is the decision rule? (Round the final answer to 2 decimal places.)
Reject H0 if the test statistic is greater than ________
c. Compute SST, SSE, and SS total. (Round the final answers to 3 decimal places.)
SST =
SSE =
SS total =
d. Complete the ANOVA table. (Round the SS, MS, and F values to 3 decimal places.)
Source SS DF MS F
Treatment ? ? ? ?
Error ? ? ?
Total ? ?
e. State your decision regarding the null hypothesis.
Reject OR Do not reject H0.
a.
H0: The treatment means are the same.
H1: The treatment means are not all the same.
b.
Reject H0 if the test statistic is greater than critical Value.
c.
SST = 1.167
SSE = 58.5
SS total = 59.667
d.
Source SS DF MS F
Treatment 1.167 2 0.583 0.09
Error 58.5 9 6.5
Total 59.667 12
e.
Do not reject H0
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