9. We would like to test if students who are in the social sciences, natural sciences, arts \& humanities, and other fields spend the same amount of time studying for this course. What type of test should we use? t-test for two dependent groups t-test for two independent groups z-test F-test (ANOVA) 10. Which of the following is most useful for checking the equal variance across groups condition for ANOVA? Summary statistics suggesting that the means of each group are roughly equal. Histograms suggesting nearly normal distributions of data in each group. Summary statistics suggesting roughly equal ranges for each group. Side-by-side box plots showing roughly equally sized boxes for each group.

Q: 12-10-1+4

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A: Use product of two matrix

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A: To find the rang by the given graph.

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