Several spreadsheet programs were tested by performing a certain task several times on each. The following TI-84 Plus display presents the results of a one-way ANOVA to determine whether the mean time required to perform a certain task differs among them.

a. State the null hypothesis.

b. How many spreadsheets were involved in the study?

c. Assume the design was balanced. How many times was the task performed for each spreadsheet?

d. What are the values of SSTr, SSE, MSTr, and MSE?

e. What is the value of the test statistic?

f. What is the P-value?
g. Can you conclude that the mean time differs among spreadsheets? Use the α = 0.01 level of significance.

Transcribed Image Text:

One-way ANOVA One-way ANOVA F=.4262152778 P=.7369008482 Factor df=3 SS=.2455 MS-.081833333 Error df=16 df=3 SS=.2455 MS .081833333 Error df=16 SS=3.072 MS=.192 SxP .438178046