Statistics MCQs

Page No. 32

The critical value of a test statistic is determined from_____________?


aThe sampling distribution of the statistics assuming Null Hypothesis


bcalculations based on many actual repetitions of the same Experiment


cThe sampling distribution of the statistic assuming Alternative Hypothesis.


dNon of these



what is the probability of a type II error when α=0.05 ?


a0.025


b 0.95


c0.05


dCannot be determined without more information



condition for applying Central Limit Theorem (CLT) which approximate the sampling distribution of the mean with a normal distribution is ?


a n > 30


bN(1 – p) > 5


c2 n 5


d N < 30


View Answer n > 30

For t distribution, increasing the sample size, the affect will be on ?


aStandard Error of the Means


bThe t-ratio


cDegrees of Freedom


dAll Above


View Answer All Above

A quantity obtained by applying certain rule or formula is known as ________________?


aEstimate


bTest Statistics


cEstimation


dSample


View Answer Estimate

Analysis of Variance (ANOVA) is a test for equally of______________?


aVariances


bProportions


cOnly two parameters


dMeans


View Answer Variances

If we reject the null hypothesis, we might be making____________?


aUnpredictable


b A correct Decision


cType-II Error


dType-Error


View Answer Type-II Error

Parameter is a _________ quantity?


aConstant


bVariable


c All of above


d Non of these


View Answer Constant

1 – α is the probability of_____________?


aAcceptance Region


b Type-I error


c Type-II Error


d Rejection Region


View Answer Acceptance Region

Power of test is denoted by _______________?


aβ


bα


c(1 – α )


d(1 – β)


View Answer (1 – β)

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