Which of the following accurately describes the purpose of post hoctests? *They determine whether a Type I Error was made in the ANOVA.They determine how much difference there is between treatments.They determine whether a complete ANOVA is justified.O They determine which treatments are different.How may t-tests would a researcher use if s/he wants to compare 4 (four)experimental conditions? *O 45O 6O 7

Post-hoc tests are used when the null hypothesis in ANOVA ia rejected. Note : Since you have asked…

Answered: Which of the following accurately…

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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A company that sponsors LSAT prep courses would like to be able to claim that their courses improve scores by at least 3 percentage points. To test this, they take a sample of 8 people, have each take an initial diagnostic test, then take the prep course, and then take a post-test after the course. The test results are below (scores are out of 100%): A. The correct t test to use here is Person Initial Test 1 2 3 4 5 6 7 8 A. Welch's unequal-variances t test OB. One-sample t test C. Student's equal-variances t test B. The number of degrees of freedom (round to the nearest integer) is C. The value of the standardized test statistic: Is there evidence, at an a = 0.035 level of significance, to conclude that the prep course improves scores by at least 3 percentage points? Carry out an appropriate hypothesis test, filling in the information requested. (Arrange your data so that the standardized test statistic is for the change from the initial test to the post-test.) 69 75 79 67 69 E. The…
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For this hypothesis test do you think the results would have been different if the values had first been separated by the gender of the subject? For example, if instead you tested the claim that the mean weight of the population of all male adults is greater than 80 kg. Explain your answer.
A random sample of 1067 teenagers (ages 12 to 17) were asked whether they played games online; 787 said that they did. What is the size of the sample? I What is the value (±0.001) of the statistic p? .
You intend to conduct an ANOVA with 31 subjects, which will be divided into 3 treatment groups. (Because it will be impossible to have equal sized groups, this is referred to as an "unbalanced" single-factor ANOVA.) What are the degrees of freedom for the numerator? d.f.(treatment) = What are the degrees of freedom for the denominator? d.f.(error) =
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What is the F test formula for comparing three or more means?
Below indicate whether the appropriate test would be an independent t-test, dependent t-test, One-way ANOVA, or z-test. A researcher wants to know if people find baby animals cuter than adult animals. All of the participants in a study are shown 10 pictures of baby animals and 10 pictures of adult animals. They are asked to rate (on a 1 to 10 scale) how cute they think each animal is.
You want to compare differences in prior arrests across ethnicity in your study, you measured ethnicity as white =0 black =1 hispanic=2, and other =3. Prior arrests was recorded as the number of prior arrests. which test would you perform to see if arrests differ across diffrent ethnic categories? A. ANOVA B. T-test
Hello. When doing the first calculation for the Test statistic i am getting a final answer of 44 not 63.36 using excel. Is there a reason for this?
Answers in boxes are: Less than, less than or equal to, greater than or greater than or equal to, equal to or not equal to

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Which of the following accurately describes the purpose of post hoc tests? *