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). 8 9 10 11 12 13 14D 618 518 503 604 415 350 439 609 409 481 594 431 527 591 Score on second test 621 573 577 627 373 369 399 717 488 553 634 478 558 623 Student 4 6 7 Score on first test Identify the rejection region(s). Choose the correct answer below. O A. t< - 2.650 or t> 2.650 O B. t< -3.012 or t> 3.012 C. t< - 2.650 O D. t>3.012 (c) Calculate d and sd- d = - 35.786 (Type an integer or a decimal. Round to three decimal places as needed.) Calculate sd- Sa = 133.096 (Type an integer or a decimal, Round to three decimal places as needed.)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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 621 573 577 627 373 369 399 717 488 553 634 478 558 623
10 11 12 13 14 D
618 518 503 604 415 350 439 609 409 481 594 431 527 591
1
2
3
4
6
8
Identify the rejection region(s). Choose the correct answer below.
O A. t< - 2.650 or t> 2.650
O B. t< -3.012 or t> 3.012
OC. t< - 2.650
O D. t>3.012
(c) Calculate d and sd.
d = - 35.786
(Type an integer or a decimal. Round to three decimal places as needed.)
Calculate sd-
Sa = 133.096
(Type an integer or a decimal. Round to three decimal places as needed.)
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 Score on second test 621 573 577 627 373 369 399 717 488 553 634 478 558 623 10 11 12 13 14 D 618 518 503 604 415 350 439 609 409 481 594 431 527 591 1 2 3 4 6 8 Identify the rejection region(s). Choose the correct answer below. O A. t< - 2.650 or t> 2.650 O B. t< -3.012 or t> 3.012 OC. t< - 2.650 O D. t>3.012 (c) Calculate d and sd. d = - 35.786 (Type an integer or a decimal. Round to three decimal places as needed.) Calculate sd- Sa = 133.096 (Type an integer or a decimal. Round to three decimal places as needed.)
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