A randomly selected individual, after going through an experimental treatment, has a score of 27 on a particular measure. The scores of people in general on this measure are normally distributed with a mean of 19 and a standard deviation of 4. The researcher predicts an effect, but no particular direction. Using the 5% significance level, what should you conclude? 1.Please define the research and null hypotheses
2.Determine the characteristics of the comparison distribution. 3.Determine the cutoff sample scores on the comparison distribution at which the null hypothesis should be rejected.
4.Determine your sample’s score on the comparison distribution
5.Determine whether to reject the null hypothesis. What does this mean? Please describe. 6.What is the region of rejection when hypothesis testing? What is the region(s) of rejection from the question above?
7.When you make your conclusion about the null hypothesis, can you say that your results prove the hypothesis? Explain why or why not. 8.What does it mean if the results of a study are inconclusive?