The president of a university claims that the mean attendance at football games is less than 50,000 and therefore the stadium does not need additional seating. Determine whether the hypothesis for this claim is left-tailed, right-tailed, or two- tailed. right-tailed two-tailed O left-tailed

A social psychologist wants to know if there are differences in extraversion scores based on gender identity (male, female, nonbinary). She should use a ____ ANOVA. a. three-way within-groups b. one-way between-groups c. one-way within-groups d. three-way between-groups

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A researcher claims that 75% of votors favor gun control. Determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. right-tailed two-tailed left-tailed

What would the alt and null hyp. be? How would I calculate/understand cohen d? I believe the sig. (two tailed) is .003....how to determine significance?

Please answer the question contained in the following picture

Suppose we know that at a University XYZ that 30% of students receive an A in their introductory statistics class, 30% receive a B, 20% receive a C, 10% receive a D, and 10% receive an F. For comparison, a sample of 300 students at University ABC is taken and 20% received an A, 28% received a B, 26% received a C, 15% received a D, and the remaining students failed the class. When testing (at the 5% level of significance) whether the proportions between the two universities are different, what is the null and alternative hypotheses

Which of the following is the appropriate conclusion?A) There is insufficient evidence that the mean number of sets they played in their fourth year of competition is higher than the mean number of sets they played in their first year of competition. B) There is sufficient evidence that the mean number of sets they played in their fourth year of competition is higher than the mean number of sets they played in their first year of competition. C) There is sufficient evidence that the mean number of sets they played in their fourth year of competition is the same as the mean number of sets theyplayed in their first year of competition. D) There is sufficient evidence that the mean number of sets they played in their fourth year of competition is the same as the mean number of sets they played in their first year of competition.

If a study determines the difference in average salary for subpopulations of people with blue eyes and people with brown eyes is not signaficant, then the populations of blue eyed people and brown eyed people are _______ different salaries... unlikey to have very likely to have guranteed to have guranteed to not have