CFA Practice Question

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CFA Practice Question

A researcher is seeking to prove that the mean number of teenagers who will start smoking this year is less than the mean number of teenagers who started smoking last year. What type of test should he/she use?

A. two-tailed test
B. one-tailed test
C. alternative hypothesis
Correct Answer: B

User Contributed Comments 2

User Comment
nufan B is right because "is less than the mean" = one-tailed test
got2pass less than or greater than would use the one-tailed test
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