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 11 12 13 14e 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 4 5 678 10 Score on first test (a) Identify the claim and state Ho and Ha- The claim is "The students' critical reading test scores V the second time they took the test." Let H. be the hypothesized mean of the students' first score minus their second score. State Ho and H. Choose the correct answer below. OC. Họ: Ha =0 O A. Ho: Ha s0 Hạ: Ha >0 O B. Ho: Ho zd H3: Hg #0 O D. Ho: Ha 20 O E. Ho: He sd OF. Ho: Ha #0 Ha: H =0 (b) Find the critical value(s) and identify the rejection region(s).

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question
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
7 89 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|418 442 465 478 599 599 459 519 506 447 630
1 2 3
4 5
Score on first test
Taentiry tne rejection region(s). Cnoose tne correct answer peiow.
O A. t< - 2.650 or t> 2.650
O B. t< - 2.650
O C. t>3.012
O D. t< - 3.012 or t> 3.012
(c) Calculate d and sa
(Type an integer or a decimal. Round to three decimal places as needed.)
Çalculate sa-
Sa =
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 7 89 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|418 442 465 478 599 599 459 519 506 447 630 1 2 3 4 5 Score on first test Taentiry tne rejection region(s). Cnoose tne correct answer peiow. O A. t< - 2.650 or t> 2.650 O B. t< - 2.650 O C. t>3.012 O D. t< - 3.012 or t> 3.012 (c) Calculate d and sa (Type an integer or a decimal. Round to three decimal places as needed.) Çalculate sa- Sa =
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).
5 6 7 8 9 10 11 12 13 14 e
1635 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
Student
1 23 4
Score on first test
(a) Identify the claim and state H, and Ha.
The claim is "The students' critical reading test scores
V the second time they took the test."
Let H, be the hypothesized mean of the students' first score minus their second score. State Ho and H,. Choose the correct answer below.
O A. Ho: Ha s0
Ha: Ha > 0
O B. Ho: Ha 2d
H3: Ha <d
O C. Ho: Ha = 0
H3: Hg #0
O D. Ho: Ha 20
O E. Ho: Ha sd
O F. Ho: Ha +0
Ha: Ha <0
H3: Ha = 0
(b) Find the critical value(s) and identify the rejection region(s).
to =
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). 5 6 7 8 9 10 11 12 13 14 e 1635 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 Student 1 23 4 Score on first test (a) Identify the claim and state H, and Ha. The claim is "The students' critical reading test scores V the second time they took the test." Let H, be the hypothesized mean of the students' first score minus their second score. State Ho and H,. Choose the correct answer below. O A. Ho: Ha s0 Ha: Ha > 0 O B. Ho: Ha 2d H3: Ha <d O C. Ho: Ha = 0 H3: Hg #0 O D. Ho: Ha 20 O E. Ho: Ha sd O F. Ho: Ha +0 Ha: Ha <0 H3: Ha = 0 (b) Find the critical value(s) and identify the rejection region(s). to =
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman