An article compared the drug use of 288 randomly selected highschool seniors exposed to a drug education program (DARE) and 335randomly selected high school seniors who were not exposed to sucha program. Data for marijuana use are given in the accompanyingtable.
| n | Number Who Use Marijuana |
---|
Exposedto DARE | 288 | 142 |
---|
NotExposed to DARE | 335 | 177 |
---|
Is there evidence that the proportion using marijuana is lowerfor students exposed to the DARE program? Use ? =0.05.(Use pDARE ? pNo DARE.Round your test statistic to two decimal places and yourP-value to four decimal places.)
z=
P-value=
State your conclusion.
We reject H0. We do not have convincingevidence that the proportion of students using marijuana is lowerfor students exposed to the DARE program than for students notexposed to the program.
We fail to reject H0. We have convincingevidence that the proportion of students using marijuana is lowerfor students exposed to the DARE program than for students notexposed to the program.
We reject H0. We have convincing evidencethat the proportion of students using marijuana is lower forstudents exposed to the DARE program than for students not exposedto the program.
We fail to reject H0. We do not haveconvincing evidence that the proportion of students using marijuanais lower for students exposed to the DARE program than for studentsnot exposed to the program.