In a completely randomized design, the F-test statistic will decrease as Multiple Choice the total variability increases. the total variability decreases. the variability among the groups increases relative to the variability within the groups. the variability among the groups decreases relative to the variability within the groups. A company produces part TNV-10. This particular part can be manufactured using 3 different production methods. The management wants to know if the quality of the units of part TNV-10 is the same for all processes. The production supervisor obtained the following data: Process 1 had 29 defective units i 240 items, Process 2 produced 12 defective units in 180 items, and Process 3 manufactured 9 defective units in 150 items. At a significance level of 0.05, we performed a chi-square test to determine whether the quality of the items produced appears to be the same for all three processes. What is the null hypothesis? Multiple Choice Ho: The row and column variables are associated with each other. Both "Ho: The number of defectives produced is independent of the production process used." and "Ho: The proportion of defective units produced by the three production processes is the same.' are correct or at least acceptable ways of stating the null hypothesis, Ho: The number of defectives produced is independent of the production process used. All of the other choices are acceptable ways of stating the null hypothesis. Ho: The proportion of defective units produced by the three production processes is the same. For two-way ANOVA, factor 1 has a-levels, and factor 2 has b-levels. This design results in a total of treatments. Multiple Choice a + b a alb la-bl