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Basic Question 7 of 9
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?
B. one-tailed test
C. alternative hypothesis
A. two-tailed test
B. one-tailed test
C. alternative hypothesis
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 |
I passed! I did not get a chance to tell you before the exam - but your site was excellent. I will definitely take it next year for Level II.
Tamara Schultz
Learning Outcome Statements
explain hypothesis testing and its components, including statistical significance, Type I and Type II errors, and the power of a test
CFA® 2024 Level I Curriculum, Volume 1, Module 8.