17. Which of the following statements is true?
A) This is a two-tail test of two dependent samples.
B) This is a two-tail t-test of two independent samples.
C) This is a two-tail z-test of two independent samples.
D) This is a test of matched pairs.
E) None of the above
18. To test the claim that the two groups spent the same amount the set of hypotheses is
19. Find the test statistic z.
20. Find the p-value
E) None of the above
21. At the 5% level of significance we can conclude
A) That the two groups spent the same amounts.
B) That the two groups did not spent the same amounts.
C) The freshmen spent more.
D) The seniors spent more.
E) None of the above
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