Statistics MCQs

Page No. 31

In binomial distribution the probability of success remains __________ from trial to trial?


aConstant


bVaries


cFour


dProbability


View Answer Constant

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


bMinimax estimator


cBay’s estimator


dSufficient estimator



The non parametric equivalent of an unpaired samples t-test____________?


aKruskal Wallis Test


bMann-Whitney U test


c Wilcoxon signed rank test


dSign test


View Answer Mann-Whitney U test

When testing for randomness, we can use_____________?


aSign test


b None of these


cRuns test


dD Mann-Whitney U test


View Answer Runs test

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 ?


aThe Mann-Whitney test


bThe Kruskal-Wallis test


cThe Wilcoxon Signed Rank test


dThe Kolmogorove-Simirnor test



Which of the following test must be two-sided ?


aSign test


bWilcoxon Signed Rank


cKruskal-Wallis


dRuns test


View Answer Sign test

The Wilcoxon, Rank-Sum test used to compares_______________?


aAny number of populations


bA sample mean to the population mean


cTwo populations


dThree populations


View Answer Two populations

Comparing the times to failure of radar transponders made by firms A, B, and C based on an airline’s sample experience with the three types of instruments one may use____________?


a Kolmogorov-Smirnor test


b Wilcoxon Rank-Sum test


cSpearman Rank Correlation test


dKruskal-Wallis test


View Answer Kruskal-Wallis test

The Runs test results in rejecting the null hypothesis of randomness when______________?


aThere is an unusually large number of runs


bThere is an unusually small number of runs


c None of these


dEither of the above


View Answer Either of the above

In testing for the difference between two populations, it is possible to use____________?


aThe Wilcoxon Rank-Sum test


bThe Sign test


cNone of the above


d Either of the above



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