An instructor for a test preparation course claims that the course will improve the test scores of students. A table in exam 4 score improvement shows the critical reading scores for 14 students the first two times they took the test. Before taking the test for the second time, the students took the instructors course to try to improve their critical reading test scores. At α = 0.01 is there enough ev dence to support the instructor's claim?Student 1 2 3 4 5 6 7 8 9 10 11 12 13 14Score on first test 447 500 466 358 435 454 539 636 462 628 388 344 467 327Score on second test 452 573 556 588 368 489 536 783 534 690 415 367 516 338a. The claim is "The students' critical reading test scores the second time they took the test. b. Find the critical value(s) and identify the rejection region(s).