A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with u = 519. The teacher obtains a random sample of 2200 students, puts them through the review class, and finds that the mean math score of the 2200 students is 524 with a standard deviation of 118. Complete parts (a) through (d) below. . . . (c) Do you think that a mean math score of 524 versus 519 will affect the decision of a school admissions administrator? In other words, does the increase in the score have any practical significance? O A. Yes, because every increase in score is practically significant. O B. Yes, because the score became more than 0.96% greater. C. No, because the score became only 0.96% greater. O D. No, because every increase in score is practically significant. (d) Test the hypothesis at the a = 0.10 level of significance with n = 375 students. Assume that the sample mean is still 524 and the sample standard deviation is still 118. Is a sample mean of 524 significantly more than 519? Conduct a hypothesis test using the P-value approach. Find the test statistic. to =0 (Round to two decimal places as needed.)