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 = 513. The teacher obtains a random sample of 1800 students, puts them through the review class, and finds that the mean math score of the 1800 students is 521 with a standard deviation of 117. Complete parts (a) through (d) below. . (a) State the null and alternative hypotheses. Let u be the mean score. Choose the correct answer below. O A. Ho: H>513, H,: u#513 O B. Ho: H<513, H1: µ> 513 O C. Ho: H=513, H,: u#513 O D. Ho: H=513, H,: u> 513

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