(b) Find the critical value(s) and identify the rejection region(s). (c) Calculate d and sd. (d) Use the t-test to find the standardized test statistic t.
(b) Find the critical value(s) and identify the rejection region(s). (c) Calculate d and sd. (d) Use the t-test to find the standardized test statistic t.
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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(b) Find the critical value(s) and identify the rejection region(s).
(c) Calculate d and sd.
(d) Use the t-test to find the standardized test statistic t.
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 599 368 476 606 411 390 571 518 481 496 474 384 381 543
1
2
9 10 11 12 13 14 0
591 356 458 586 471 351 617 490 458 473 455 353 358 529
4
6
7
8.
Ha: Hd>d
Ha: Hd =0
Hai Ha #0
E. Ho: Hd20
OF. H: Ha2d
O D. Ho: Hds0
Ha: Ha>0
Ha: Ha <0
(b) Find the critical value(s) and identify the rejection region(s).
(Use a comma to separate answers as needed. Type an integer or a decimal. Rhund to three decimal places as needed.)
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