EBK BUSINESS STATISTICS
8th Edition
ISBN: 9780135179833
Author: STEPHAN
Publisher: VST
expand_more
expand_more
format_list_bulleted
Question
error_outline
This textbook solution is under construction.
Students have asked these similar questions
Type II error occurs when an individual fails to reject H0 when H0is false. True or False?
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
O B. t 3.012
OC. t3.012
(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.)
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 576 551 605 514 583454 432 334 405 393 363 660 551 423
1 2 3 4
570 539 580 488 6
11 12 13 14 D
477 329 398 377 352 627 504 375
7
8
10
(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 u. be the hypothesized mean of the students' first score minus their second score. State H, and H. Choose the correct answer below.
OC. Ho: Ha sd
O B. Ho: Hazd
Ha: Hg 0
OF. Ho: Ha 20
O D. Ho: Ha =0
O E. Ho: Ha #0
Ha Hg…
Knowledge Booster
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
- 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…arrow_forwardAn 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 1 3 4 9 10 11 12 13 14 D 436 396 447 520 526 517 596623 575 403 591 622 527 338 Score on second test 437 405 457 545 474 530 536 626 590 407 622 658 551379 5 6 7 8 Identify the rejection region(s). Choose the correct answer below. OA. t3.012 O C. t 3.012 O D. t 2.650 (c) Calculate d and sa. d = -7.143 (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.)arrow_forwardChoose the correct answer When we perform a chi-square test for independence, the null hypothesis states that the two variables are a. independent b. related c. normally distributed d. mutually exclusivearrow_forward
- A diet center wanted to test three different methods for losing weight to determine if the average weight loss (reported in pounds/week) for each method is the same. The results for the three methods are tabulated below. Given that there is a significant difference between the three methods, use the Tukey test to determine if there is a significant difference between each pair of methods. Let a=0.05. (picture attached)arrow_forwardP(z>2) =?arrow_forwardA researcher is looking at a new marketing campaign for a product. After 200 people watched the marketing campaign about 60 percent liked the product. Prior to the marketing campaign the product was liked by about 50 percent of people. What are the chi-square test degrees of freedom for this research description?arrow_forward
- Does training in stress reduction make a difference for student success? 15 students received training (M1= 88, SS1= 400) and 15 students did not (M2= 82, SS2= 440). Test using α = .05 Does training in stress reduction make a difference?arrow_forwardIrsd (m, n) = 1 and p|m then gcd (n, p) = 1 %3D :Select one True False Clear my choice التالي ( ) السابقarrow_forwardIf the coefficient of determination between two independent variables is 0.47, what is the VIF? VIF= (Round to three decimal places as needed.)arrow_forward
- 1. Was a dependent or independent t-test used to analyze the data? How do you know?arrow_forwardAn 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 fimes they fook 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 daim? Cormplete parts (a) through (f) 1 2 3 4 56 78 9 10 11 12 13 14 635 543 475 381 498 454 495 496 529 408 508 477 404 607 Score on second test 637 594 526 418 442 465 478 599 599 459 519 506 447 630 Student Score on first test (a) Identify the claim and state Ho and H. The claim is "The students' critical reading test scores V the second time they took the test." Let Pa be the hypothesized mean of the students' first score minus their second score. State Ho and H. Choose the correct answer below O C. Ho Hg =0 O A. Ho Ha s0 H, Ha >0 OB. Ho: Hg zd H, Hg d OF. Ho Ho #0 H H =0 (b)…arrow_forwardResearchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 1 22 22 2 32 34 3 24 25 4 28 30 5 26 29 Then H0: μ2 - μ1 ≠ 0, true or false?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
Surface Area Of A Sphere | Geometry | Math | Letstute; Author: Let'stute;https://www.youtube.com/watch?v=T_DBkFnr4NM;License: Standard YouTube License, CC-BY