Question

a) Based on the situation outlined below, identify the dependent and independent variables.

b) Is her conclusion valid? Justify why or why not

c) List a possible extraneous variables in the study.

Aurora (Sleeping Beauty) is conducting an experiment on a new brand of sleeping pills. She performs a multi-stage survey on 80 people in total. Of those participating she chooses 40 of them to try the new brand of sleeping pills and the other 40 to have a placebo. She finds out that those who took the drug slept for 2 extra hours at night and so concludes that it's the most effective sleeping pill in the world.

Answer 1