An instructor for a test preparation course claims that the course will improve the test scores of students. The table shows the critical reading scores for 14 students the first two fimes theyr fook...

Extracted text: An instructor for a test preparation course claims that the course will improve the test scores of students. The table shows the critical reading scores for 14 students the first two fimes theyr fook the test Before taking the lest for the second time, the students took the instructor's course to try to improve their critical reading test scores. At a = 0.01, is there enough evidence to support the instructor's claim? Complefe parts (a) hrough () Student 9 10 11 12 13 14 635 543 475 381 498 454 495 496 529 408 508 477 404 607 Score on second test 637 594 526 418 442 465 478 599 599 459 519 506 447 630 1 2 3 Score on first test (Type an integer or a decimal. Round to three decimal places as needed.) (e) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. Fail to reject the null hypothesis. Reject the null hypothesis. (f) Interpret the decision in the context of the original claim. Choose the correct answer below. O A. At the 1% significance level, there is evidence that the students' critical reading scores got worse the second time they took the test. O B. At the 1% significance level, there is not enough evidence that the students' critical reading scores improved the second time they took the test. O C. The sample was not large enough to make a conclusion. O D. At the 1% significance level, there is enough evidence that the students' critical reading scores improved the second time they took the test. Click to select your answer(s). 7:10 PM O 430/2021 Type here to search


Extracted text: 1 of 7 (2 complete) ▼ This Test 39 pls possible An instructor for a test preparation course claims that the course will inmprove the test scores of students. The table shows the critical reading scores for 14 studerts the first teo fimes they fook the fest Before faking the test for the second time, the students took the instructor's course to try to improve their critical reading test scores. At a = 0.01, is there enough evidence to support the instructor's dlaim? Complete parto (a) throurh (). Student 9 10 11 12 13 14 D 635 543 475 381 498 454 495 496 529 408 508 477 404 607 Score on second test 637 594 526 418 442 465 478 599 599 459 519 506 447 630 12 3 45 6 Score on first test (Type an integer or a decimal. Round to three decimal places as needed.) (d) Use the t-test to find the standardized test statistic t (Type an integer or a decimal. Round to three decimal places as needed) (e) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. Fail to reject the null hypothesis O Reject the null hypothesis (f) Interpret the decision in the context of the original claim. Choose the correct answer below. O A. At the 1% significance level, there is evidence that the students' critical reading scores got worse the second time they took the test. Click to select your answer(s) 2 PM 43/2021 P Type here to search