Question

8) Arnold compares the means of three groups and calculates a value of -2.01 for the...

8) Arnold compares the means of three groups and calculates a value of -2.01 for the F ratio. This necessarily implies that. . Group of answer choices

a. the mean of the first group is the highest of the three groups

b. the mean of the third group is the highest of the three groups

c. the differences between the means are statistically significant

d. he made an error is his calculation

9) The problem with conducting multiple t-tests instead of using a post-hoc test is that you increase the risk of Type 1 errors. Group of answer choices

a. True

b. False

10) A researcher theorizes that Freshmen spend more time studying than Sophomores, who spend more time studying than Juniors, who spend more time studying than Seniors. In conducting a one-way ANOVA on this data, what is the most appropriate way to state the null (H0) hypothesis? Group of answer choices

a. all µs are different

b. not all µs are different

c. all µs are equal

d. not all µs are equal

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Answer #1

8) Arnold compares the means of three groups and calculates a value of -2.01 for the F ratio. This necessarily implies that.

d. he made an error is his calculation

9) The problem with conducting multiple t-tests instead of using a post-hoc test is that you increase the risk of Type 1 errors.

a. True

10) A researcher theorizes that Freshmen spend more time studying than Sophomores, who spend more time studying than Juniors, who spend more time studying than Seniors. In conducting a one-way ANOVA on this data, what is the most appropriate way to state the null (H0) hypothesis?

c. all µs are equal

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