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.Management Sciences
Category: Statistical Inference Mcqs
When testing for randomness, we can use_____________?
A. Sign test
B. None of these
C. Runs test
D. D Mann-Whitney U test
The Wilcoxon, Rank-Sum test used to compares_______________?
A. Any number of populations
B. A sample mean to the population mean
C. Two populations
D. Three populations
Which of the following test is most likely assessing this null hypothesis: Ho The number of violations per apartment in the population of all city apartments is binomially distributed with a probability of success in any one trial of P=0.3 dd ?
A. The Mann-Whitney test
B. The Kruskal-Wallis test
C. The Wilcoxon Signed Rank test
D. The Kolmogorove-Simirnor test
Let X1,X2,……,Xn be a random sample from a density,,,, f(x ι θ) where θ is a value of the random variable Θwith known density gΘ(θ) Then the estimator ∏(θ) with…/ respect to the prior gΘ(θ) is define as______________E[∏(θ)ιX1,X2,…..,Xn] is called?
A. Posterior Bay’s estimator
B. Minimax estimator
C. Bay’s estimator
D. Sufficient estimator
Three brands of coffee are rated for tasted on a scale of 1 to 10. Six persons are asked to rate each brand so that there is a total of 18 observations.The appropriate test to tasted equally good is_____________?
A. One way analysis of variance (ANOVA)
B. Spearman Rank difference
C. Wilcoxon Rank-Sum test
D. Kruskal-Wallis test
The non parametric equivalent of an unpaired samples t-test____________?
A. Kruskal Wallis Test
B. Mann-Whitney U test
C. Wilcoxon signed rank test
D. Sign test
95% confidence limits u are ________________?
A. x±1.65 6/√n
B. u±1.95 S/√n
C. x±1.96 6/√n
D. ±1.96 6/√n
A test is said to be most powerful test of size α, if_______________?
A. Among all other test of size α or less it has the largest power
B. Among all other test of size α or greater it has the largest 1 – α
C. Among all other test of size α or greater it has the smallest power
D. Among all other test of size α or greater it has the largest β
In testing for the difference between two populations, it is possible to use____________?
A. The Wilcoxon Rank-Sum test
B. The Sign test
C. None of the above
D. Either of the above
The sign test assumes that the_______________?
A. Samples are independent
B. Samples have same mean
C. Sample are dependent
D. The Wilcoxon Signed Rank test is used
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