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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 times they took the test. Before taking 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 claim? Complete parts (a) through (f). Student Score on first test Score on second test|637 594 526 418 442|465 478 599 599 459 519|506 447 630 (a) Use tne t-test TO Tina tne stanaaraizea test Statistic . 123 4 56 7 8 9 10 11 12 13 14 635 543 475 381 498 454 495 496 529 408 508 477 404 607 t=0 (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. O 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. 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. OC. The sample was not large enough to make a conclusion. OD At the 1% sinificance level there is ennunh evidence that the students' critical reading scores imnrnved the second time thev took the test

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 times they took the test. Before taking 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 claim? Complete parts (a) through (f). Student Score on first test Score on second test|637 594 526 418 442|465 478 599 599 459 519|506 447 630 (a) Use tne t-test TO Tina tne stanaaraizea test Statistic . 123 4 56 7 8 9 10 11 12 13 14 635 543 475 381 498 454 495 496 529 408 508 477 404 607 t=0 (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. O 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. 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. OC. The sample was not large enough to make a conclusion. OD At the 1% sinificance level there is ennunh evidence that the students' critical reading scores imnrnved the second time thev took the test

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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 times they took the test. Before taking 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 claim? Complete parts (a) through (f). Student Score on first test 10 11 12 13 14 e 635 543 475 381 498 454 495 496 529 408 508 477 404 607 Score on second test 637 594 526 418 442 465478 599 599 459 519 506 447 630 1 2 3 4 56 7 8 9 (a) use tne t-test to fina the standardizea 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. 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. At the 1% sianificance level there is enouah evidence that the students' critical readina scores imnroved the second time thev took the test
Transcribed Image 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 times they took the test. Before taking 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 claim? Complete parts (a) through (f). Student Score on first test 10 11 12 13 14 e 635 543 475 381 498 454 495 496 529 408 508 477 404 607 Score on second test 637 594 526 418 442 465478 599 599 459 519 506 447 630 1 2 3 4 56 7 8 9 (a) use tne t-test to fina the standardizea 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. 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. At the 1% sianificance level there is enouah evidence that the students' critical readina scores imnroved the second time thev took the test
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