Nancy sets the hypotheses as follows: H0 = There are no differences among the mean effectiveness scores of groups. Ha = There are statistically significant differences among the mean effectiveness scores of groups

A. Explain what it would mean in this scenario if Nancy were to commit a Type I error. (2 pts.) B. Explain what it would mean in this scenario if Nancy were to commit a Type II error. (2 pts.) C. If the results of the data analysis support the alternative hypothesis, what was Nancy's decision about the null hypothesis? (1 pt.) D. If the results of the data analysis support the alternative hypothesis, is the following statement appropriate? Explain. (2 pts.) Therapy A is more effective than Therapy B which is more effective than having no treatment.