Stats 14

File:  Waterflow

a. Produce the relevant ANOVA table and conduct a hypothesis test to determine if the mean detection time differs among the four shutoff valve models. Use a significance level of 0.05.

b. Use the Tukey-Kramer multiple comparison technique to discover any differences in the average detection time. Use a significance level of 0.05.

c. Which of the four shutoff valves would you recommend? State your criterion for your selection.