CFA Practice Question

There are 434 practice questions for this study session.

CFA Practice Question

In 2007, the DEA found that 12% of teenagers (13-19 years) used illegal drugs. In 2011, to check to see if there was a change in usage, a stduy of 1000 randomly selected teens produced 100 teens who used illegal drugs. For this study, the null hypothesis, Ho, is ______.
A. H0: p < 0.12
B. H0: p > 0.12
C. H0: p = 0.12
Explanation: Because the DEA is interested in a change the test is not directional; it is a two-tailed test. The null hypothesis should be H0: p = 0.12.

User Contributed Comments 1

User Comment
achu Read question, WITHOUT personal bias!!! :( Quesion only asks for change, not improvement!
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