A consumer group feels that the average person spends more than 5 dollars each month on tooth care products. They decide to use hypothesis testing to see if they are right. Which of the following would be the alternative hypothesis? Ha. U = 5 HE: U 2 5If we want to understand what role a person's experience plays in the salary that he/she gets, which statistical method would be most appropriate? Regression analysis Hypothesis test Binomial distribution Confidence interval