8.In the population, the average IQ is 100 with a standard deviation of 15. A teamof scientists wants to test a new medication to see if it has an effect onintelligence (as measured by IQ). A sample of 40 participants who have takenthe medication has a mean of 140.

Did the medication affect intelligence?

Conduct the hypothesis testing (5 step procedure). Use =0.05.

a)Formulate two hypotheses.

b)What is the most appropriate test?

c)Show/explain 5-step procedure:-formulate decision rule -calculate a