Which of the following is true about the homogeneity of variances assumption?     You need to obtain a new set of data     You must calculate Cohen's d     If unequal, you should exclude some participant data     It cannot be violated if you want to conduct an independent samples

Q: An experiment samples two independent populations X and Y. • X is sampled 26 times yielding sample…

A: Provided information is ; For sample 1: sample size(n1) =26          ,sample mean( x¯)=34.1  ,…

Q: Which one of the following statements is not true as OLS assumptions? O a. The variance of the…

A: The assumptions of the OLS are: 1. The variance of the residual can be constant. 2. The expected…

Q: ANOVA Involves "decomposition of variance-a fancy term that means we examine diferent sources of…

A: There are two types of variability in ANOVA. They are, Between groups variability. Within group…

Q: If y = {12, 3, 6, 6, 19, 5, 7, 2, 4, 6} is a population of scores then: The variance =…

A: From the provided information,The data values are as follow:y = {12, 3, 6, 6, 19, 5, 7, 2, 4, 6}n =…

Q: Question 18

A: The independent t-test assumes the variances of the two groups we are measuring are equal in the…

Q: Q19: Consider the following data: 3s, 12, s0, 49, 28, 41, 47 The 60-th percentile is (A) 47.4 (B)…

A:

Q: The Analysis of Variance (ANOVA) is used to determine if there is a difference between a selected…

A: ANOVA, the analysis of variance is the technique used to check if there is significant difference…

Q: Now let us say we want to know where the source of this variance is coming from (which group(s)…

A: Solution: The given claim is that there is a difference in number of IG followers just between…

Q: We are interested in determining whether or not the variances of the sales at two small grocer of 21…

A: Given: Store A: n1=21, S12=800 Store B: n2=16, S22=400

Q: Analyze the output and write a short summary statement about your conclusion.

A: Concept of p-value: The p-value in hypothesis testing is the probability of obtaining a test…

Q: If the correlation coefficient is negative, this means the test statistic, t, can not be calculated…

A: Given that ; Here we use the correlation coefficient concept to solve this problem.

Q: A carbonated soft drink dispenser is used to fill cups with soft drinks. A random sample of 20 cups…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: Lack-of-Fit 6 2.2194 0.3699 4.62 0.342 Pure Error 1 0.0800 0.0800 Total 9 23.9000 Predictor Coef SE…

A: Here we can see that the regression of the data is calculated, we also call it as regression…

Q: Suppose we want to test that the average age of The following table shows the Excel output for this…

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Q: TRUE OR FALSE. a. Pearson correlation coefficient is an example of a non-parametric test. b.…

A: a) False

Q: I used the correct excel table and got all the answers on point and still struggle to find the one…

A: Given that The anovo table Formula for F F=MSTreatment/MSError

Q: please explain thoroughly the Test of Homogeneity of Variances and Why Post Hoc Tukey HSD is the…

A: Given Information: Consider the given output that shows descriptive statistics, the results for the…

Q: QUESTION 15 When do we reject the null hypothesis in a Chi-square test for independence? O When the…

A: Question 15 Decision rule: If test statistic > critical value, then reject the null hypothesis.…

Q: Nintendo Sony would like to test the hypothesis that a difference exists in the average age of users…

A: Note: Hi there! Thank you for posting the question. According to our policy to avoid the plagiarism…

Q: 61394, df = 4, p-value 0.5226 ld tell you the type of test you are dealing wiE erence in variances…

A: Bartlett's K-square test for homogeneity of variance is designed to test that variances are equal…

Q: Adding an irrelevant variable to a model generally O decreases the variances O increases the…

A: Adding a irrelevant variable to a model generally _______________________ of the remaining OLS…

Q: 2.058

A: For Porsche Driver: sample size (n1) = 16 sample mean (x̄1) = 50 sample variance (s1)2 =9 For…

Q: 6. Comparing Two Population • Comparing Two Population Variances • The two samples are randomly…

A: Statistics is defined as the collection, presentation, interpretation of the data and presentation…

Q: How would Interpret the following  data using two sample t-testing if unequal variances? Each of…

A: From the given Excel output, the t test statistic is 5.6086 and the p-value for the two tail is…

Q: 10. Consider the following questions concerning the sample variance: (A) Is it possible for a…

A: Solution

Q: When variance is unknown (if the population is finite with mean When variance is unknown (if the…

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Q: Sample Variance of 10, 12, 19, 21, 17 are?

A: Here, the sample size, n is 5. The mean is calculated below. x=∑i=1nxin=10+12+19+21+175=15.8

Q: Miles (1000s of miles) Mean 150.7 Variance 4.661 Observations 46 Hypothesized Mean 150 45 p = Ex…

A: Find  p value, degree of freedom, n abd test statistic, sample mean and sample standard deviation,…

Q: For a population of leghorn chickens, the mean number of eggs laid per chicken is 7.3 with standard…

A: Given information: μlegborn=7.3σlegborn=1.7μsussex=5σsussex=0.85 Two independent ransom samples of…

Q: The topic is t test. Question : Assume the variance of two groups is equal, please make a the…

A: Hypothesis test are used to compare the sample and the population. If the sample size is large and…

Q: the life of two brands of canned tires durability is a feature of interest to the manufacturer.…

A: (a) The hypotheses are given below: H0:σ12=σ22Ha:σ12≠σ22

Q: STATISTICS AND PROBABILITY (PLEASE SHOW your COMPLETE & CLEAR solutions) RATE WILL BE GIVEN…

A: The following is a list of 20 scores is 70 81 61 93 66 83 68 90 91 94 84 85 89 85 74 83 72 90…

Q: Homogeneity of variances, one important assumption for using parametric tests, can be assessed by…

A: Here we need to find the correct choice for given statement.

Q: QUESTION 17 To employ Analysis of Variance (ANOVA), the populations must be independent. O True…

A: Introduction: Assumptions for ANOVA: 1. Samples  must be independent 2. Sample sizes are equal 3.…

Q: A One-Way ANOVA was conducted and the researcher tested the assumption of homogeneity of variances.…

A: Solution:  For every statistical parametric test required some assumption.  1) Assumption of…

Q: (a) State the type of data collection involved in the given case study. Justify your answer. (b)…

A: For previous version : Sample Mean 1 (Xˉ1)(\bar X_1) = 5.95.9 Sample Standard Deviation 1…

Q: What is the value of the df(Groups)?

A: There are four groups with each of 7 observations.

Q: Conduct the following hypothesis test at a=0.05. HO: Mean Age Porsche Drivers Mean Age Ferrari…

A: Given that  Sample sizes n1=16 , n2=16 Sample means x1=50 , x2=47

Q: One-way ANOVA Conditions Observations in each group is a random sample from a Normal population. •…

A: With the help of the  density trace we can verify if the data is normal or not. In the case of…

Q: One-way ANOVA Part 1. One-Way Analysis of Variance (ANOVA) 1. Null Hypothesis (just in words):…

A: 1) In one way analysis of Variance we wish to test H0: μ1 = μ2 = μ3 = ....... = μn which is similar…

Q: Describe research situation to illustrate the use of the One-way Analysis of Variance and one…

A: Assumptions of One-way analysis of variance (ANOVA) : 1] Samples are randomly selected. 2] Variance…