The mean SAT score in mathematics is 592. The standard deviation of these scores is 46. A special preparation course claims that the mean SAT score, , of its graduates is greater than 592. An independent researcher tests this by taking a random sample of 32 students who completed the course; the mean SAT score in mathematics for the sample was 613. Assume that the population is normally distributed. At the 0.01 level of significance, can we conclude that the population mean SAT score for graduates of the course is greater than 592? Assume that the population standard deviation of the scores of course graduates is also 46. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.)

(a) State the null hypothesis H0 and the alternative hypothesis H1.

H0:

H1:

(b) Determine the type of test statistic to use. Z

c) Find the value of the test statistic. (Round to three or more decimal places.)

(d) Find the critical value. (Round to three or more decimal places.)

(e) Can we support the preparation course's claim that the population mean SAT score of its graduates is greater than 592? Yes No