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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 am using your study notes and I know of at least 5 other friends of mine who used it and passed the exam last Dec. Keep up your great work!
Barnes
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® 2025 Level I Curriculum, Volume 1, Module 8.