Oxnard Petro, Ltd., has three suppliers of catalysts. Orders are placed with each supplier every 15 working days, or about once every 3 weeks. The delivery time (days) is recorded for each Deliveries2 order over 1 year. Are the main effects significant? Is there an interaction?
Answer to relevant QuestionsBelow are grade point averages for 25 randomly chosen university business students during a recent semester. Research question: Are the mean grade point averages the same for students in these four class levels? The waiting time (in minutes) for emergency room patients with non-life-threatening injuries was measured at four hospitals for all patients who arrived between 6:00 and 6:30 p.m. on a certain Wednesday. The results are ...In a one-factor ANOVA with sample sizes n1 = 8, n2 = 5, n3 = 6, n4 = 6, the test statistic was F calc = 3.251. (a) State the hypotheses. (b) State the degrees of freedom for the test. (c) What is the critical value of F for ...This table shows partial results for a one-factor ANOVA, (a) Calculate the F test statistic. (b) Calculate the p-value using Excel's function = F.DIST.RT (F,DF1,DF2). (c) Find the critical value F .05 from Appendix F or ...One particular morning, the length of time spent in the examination rooms is recorded for each patient seen by each physician at an orthopedic clinic. Do the data show a significant Physicians difference in mean times?
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