stat question

Question one. A sociologist wants to find out whether showing an educational short film (one hour) to policemen and policewomen will improve their attitude toward treating the minority. The police departments assigns fifty policemen (n = 50) and forty policewomen (n = 40) to participate in this program.

a)     What are the explanatory (independent) and response (dependent) variables?

b)     What data should he collect?

c)      What design should he follow?

d)     How should he go about choosing the experimental  and control group?

e)     Would the design that you propose enable him to draw causal conclusion?

f)       Based on the design that you propose, what research questions will he be able to answer?