In a fictional study, a pretest-posttest design was used to examine the influence of a television program on children's aggressiveness. The number of aggressive responses was measured during an observation period both before and after the television program. Perform the six steps of hypothesis testing using the following data to determine if there is a difference in the number of aggressive behaviors in children after having viewed the television program.
Participant Before After
1 6 9
2 4 3
3 12 11
4 9 12
5 10 14
6 2 6
7 14 12
Hypothesis testing
It is complicated to know the exact value of the true value of the population parameter, therefore, hypothesis testing is an inferential analysis used to make an assumption about the population parameter and infer using the sample data to conclude if to reject this assumption or not.