SSTR = 6,750H0: u1=u2=u3=u4SSE = 8,000Ha: at least one mean is differentnT = 20  The test statistic to test the null hypothesis equalsGroup of answer choices0.840.224.54.22

A researcher is comparing the performance of two groups on an exam using the Mann-Whitney U Test. What is the null hypothesis in this test?  A. There is no difference between the groups  B. The groups have equal means  C. The groups have equal variances  D. The distribution is normal

A hypothesis was tested at an α = 0.05 significance level. Review the table below and complete the sentence that follows:Table 1 ScoreSum of squaresdfMean squareFSig. (p)Between groups11.57125.7867.8180.02Within groups154.2346240.740Total165.805626Based on the information presented in Table 1, the decision is taken to __________.Group of answer choicesReject the null hypothesisAccept the null hypothesisReject the alternative hypothesisAccept the alternative hypothesis

Which of the following hypotheses is not a valid null hypothesis? Group of answer choicesμ < 0μ ≤ 0μ = 0μ ≥ 0

A null hypothesis with a one-sample test can be formulated with a <, > or ≠Group of answer choicesTrueFalse

Select Any One Of the Following Options: What is the null hypothesis in the Mann Whitney U test?The frequency of two datasets are equal.The mean rating of two datasets are equal.The frequency of two datasets are not equal.The mean ratings of two datasets are not equal.