A criminologist interested in teen age marijuana use conducted surveys of students from two different high...
A criminologist interested in teen age marijuana use conducted surveys of students from two different high schools. At one school the mean number of times the students have smoked marijuana is 9.8 times in the past 6 months. At the other school the mean number of times students reported smoking marijuana in the past 6 months is 4.6. The researcher wants to know if there is a statistically significant difference between the two schools in marijuana smoking by students.
(a) what is the independent and the dependent variables in this problem? (b) what type of t-test (independent or dependent samples) should be used for analyzing the data. Why? (c) would a one-tail or two tailed test be appropriate? Why?
Homework Answers
(a) independent variable : two different high schools
dependent variables : mean number of times students reported smoking marijuana
(b) t-test for independent samples (because two different high schools)
(c) two tailed (since The researcher wants to know if there is a statistically significant difference between the two schools in marijuana smoking by students)
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A criminologist interested in teen age marijuana use conducted
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