Several large-sized sodas were ordered at each of several fast-food restaurants, and the volume of beverage in each was measured. The following TI-84 Plus display presents the results of a one-way ANOVA to determine whether the mean volume differs among the restaurants.

a. State the null hypothesis.

b. How many restaurants were involved in the study?

c. Assume the design was balanced. How many sodas were measured in each restaurant?

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 volume differs among restaurants? Use the α = 0.05 level of significance.

Transcribed Image Text:

One-way ANOVA F=12.69874101 P=.0023972943 Factor df=2 SS=.7845 One-way ANOVA df=2 SS=.7845 MS=.39225 Error df=9 MS=.39225 Error df=9 SS=.278 MS=.030888889 Sxp=.175752351