Chapter 11, Problem 11.29CYU

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)

P(z>2) =?

A 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?

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?

Irsd (m, n) = 1 and p|m then gcd (n, p) = 1 %3D :Select one True False Clear my choice التالي ( ) السابق

If the coefficient of determination between two independent variables is 0.47​, what is the​ VIF? VIF= ​(Round to three decimal places as​ needed.)

1. Was a dependent or independent t-test used to analyze the data? How do you know?

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 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)…

Researchers 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?