An Instructor For A Test Preparation Course Claims That The Course Will Improve The Test Scores Of Students The Table S 1 (34.77 KiB) Viewed 26 times
An Instructor For A Test Preparation Course Claims That The Course Will Improve The Test Scores Of Students The Table S 2 (25.44 KiB) Viewed 26 times
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 (1) Student 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Score on first test 525 351 504 368 329 605 633 461 489 374 486 503 489 607 Score on second test 526 410594 384 295 653 574 607 577 454 526 523 501 656 The claim is "The students critical reading test scores Improved the second time they took the test." Let us be the hypothesized mean of the students first score minus their second scoro. State M and H. Choose the correct answer below. A. Ho Hj 20 OB. Ho Ho2d 0 $, Ho Wa = 0 H: H0 H:H H:H0 OD. Honda OE Ho: Hallo OF HOH Hoi Hood H:He 0 Ha Ho > 0 (b) Find the critical value() and Identity the rejection region(s) (Use a comma to separate answers as needed. Type an Integer or a decimal. Round to throw decimal places as needed.) Identify the rejection region(s). Choose the correct answer below. At-2.650 BR-2650 ort > 2.850 C>3.012 OD -3.012 or 3.012
(C) Calculated and so - (Type an Integer or a decimal. Round to three decimal places as needed.) Calculate sa (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. a (Type an Integer or a decimal, Round to three decimal places as needed.) (0) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. Fall to roject the null hypothesia O Reject the null hypothesis. (Interpret the decision in the context of the original claim. Choose the correct answer below. A. The sample was not large enough to make a conclusion OB. At the 1% significance level, there is not enough evidence that the students' critical reading scored improved the second time they took the lost OC. At the 1% significance level, there is enough evidence that the studentscritical reading scores improved the second time they took the test OD. At the 1% significance level, there is evidence that the students critical reading scores got worse tho second time they took the test Mox
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