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In general, what factors are most likely to reject the null hypothesis for an ANOVA?
In a one-way ANOVA, what does it mean to reject the statement in the null hypothesis if three treatment groups are being compared? Choose the correct answer below. A. Rejecting the statement in the null hypothesis means that there is insufficient evidence to conclude that the mean of one of the populations is different than the other two or that all three populations are different. B. Rejecting the statement in the null hypothesis means that there is sufficient evidence to...
What can be concluded by failing to reject the null hypothesis? A. either that the null hypothesis is correct or that the test procedure is not strong enough (i.e. that the sample size is not large enough) to reject the null hypothesis B. that the null hypothesis is correct, therefore the alternative hypothesis should be rejected C. that the function of the alternative hypothesis is incorrect D. that the alternative hypothesis is correct, therefore the null hypothesis should be rejected
Please answer all parts Attempts: Average: /12 ANOVA calculations and rejection of the null hypothesis Aa Aa The following table summarizes the results of a study on SAT prep courses, comparing SAT scores of students in a private preparation class, a high school preparation class, and no preparation class. Use the information from the table to answer the remaining questions. Number of Sum of Observations Sample Mean Squares (SS) 650 645 625 Treatment Private prep class High school prep class...
1. When running an ANOVA test, you observe large differences in means between groups. Within the ANOVA framework, this would most likely be interpreted as: A. Evidence strongly favoring the alternative hypothesis. B. Evidence strongly favoring the null hypothesis. C. Evidence revealing which group mean is different from the others. D. None of the above.
The null hypothesis for a one-way ANOVA states that ______. a. all of the population means are different from each other b. at least one of the population means is different from the others c. there are no differences between any of the population means d. either b or c Before running a one-way ANOVA, researchers should consider a set of assumptions. Which of the below statements is NOT one of the assumptions of the ANOVA?...
only 1-2 please 1) (2) In Experiment A, there are three treatment conditions with M = 5, M2 = 10, and M3 = 15. In Experiment B, there are three treatment conditions with M1 = 8, M2 = 10, and M3 = 12. Assume that the samples sizes in both experiments are the same. Which experiment has a greater value for MS between? (You don't have enough information to compute precise answers.) a. b. d. there's not enough information to...
21. In one-factor ANOVA for independent samples, which of the following reflects a random variability of scores in the samples? A. MSbetween B. MStotal C. MSwithin D. A & B 22. A one-factor ANOVA is used to evaluate the mean differences in cognitive task performance between three experimental groups, with n = 15 participants in each group. If the computed F = 3.17, which of the following is the correct statistical decision? A. Reject the null hypothesis with either α...
State the decision to retain or reject the null hypothesis for each of the following F-tests at a 0.05 level of significance. (a) F(3, 28) = 3.37 Retain the null hypothesis. Reject the null hypothesis. (b) F(2, 33) = 3.09 Retain the null hypothesis. Reject the null hypothesis. (c) F(1, 120) = 4.07 Retain the null hypothesis. Reject the null hypothesis. (d) F(2, 60) = 3.11 Retain the null hypothesis. Reject the null hypothesis.
11. If we reject the null hypothesis, what can we conclude, subject to the probability, α? Multiple Choice Reject the null with a probability, α, of making a Type I error. The alternative hypothesis is false. The null hypothesis is true. Both the null hypothesis and the alternative hypothesis are true. 12. The average cost of tuition and room and board at a small private liberal arts college is reported to be $8,500 per term. A financial administrator believes that...
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A scientist claims that the mean incubation period for the eggs of a species of bird is at most at most 56 56 days. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim ▼ a...