I need help with this stats question in extreme detail.

Question 1 (0.01 points) x/ Saved The following list of numbers give you the random input values for Question 2. Select the option with the answer "1" to continue. Question 2 (18 points) A company institutes an exercise break for its workers to see if it will improve job satisfaction as measured by a questionnaire that assesses workers' satisfaction. Scores of 12 randomly selected workers before and after implementation of the exercise program are shown below. Do these results show that the exercise break is effective? Test an appropriate hypothesis at a signicance level of 0.05 and state your conclusion. Provide an assesment of the validity of your results and a rationale for the method chosen.