The mean SAT score in mathematics is 554. The standard deviation of these scores is 39. A special preparation course cal

[answerhappygod]

The Mean Sat Score In Mathematics Is 554 The Standard Deviation Of These Scores Is 39 A Special Preparation Course Cal 1 (50.59 KiB) Viewed 120 times

The mean SAT score in mathematics is 554. The standard deviation of these scores is 39. A special preparation course calms that the mean SAT score, H, of its graduates is greater than 554. An independent researcher tests this by taking a random sample of 60 students who completed the course; the mean SAT score in mathematics for the sample was 567. At the 0.01 level of significance, can we conclude that the population mean SAT score for graduates of the course is greater than 5547 Assume that the population standard deviation of the scores of course graduates is also 39, Perform a one-talled 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 nuit hypothesis H, and the alternative hypothesis, 4 o P X S ce HO ho (6) Determine the type of test statistic to use Du so 口な (Choose one) (c) Find the value of the test statistie. (Round to three or more decimal places.) De 00 X (d) Find the p-value. (Round to three or more decimal places) D (e) can we support the preparation course's claim that the population mean SAT score of its graduates is greater than $54 Yes No