Statistics MCQs

Page No. 32

The critical value of a test statistic is determined from_____________?


aThe sampling distribution of the statistics assuming Null Hypothesis

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bcalculations based on many actual repetitions of the same Experiment

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cThe sampling distribution of the statistic assuming Alternative Hypothesis.

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dNon of these

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


a0.025

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b 0.95

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c0.05

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dCannot be determined without more information

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


a n > 30

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bN(1 – p) > 5

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c2 n 5

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d N < 30

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View Answer n > 30

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


aStandard Error of the Means

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bThe t-ratio

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cDegrees of Freedom

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dAll Above

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View Answer All Above

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


aEstimate

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bTest Statistics

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cEstimation

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dSample

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View Answer Estimate

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


aVariances

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bProportions

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cOnly two parameters

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dMeans

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View Answer Variances

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


aUnpredictable

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b A correct Decision

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cType-II Error

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dType-Error

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View Answer Type-II Error

Parameter is a _________ quantity?


aConstant

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bVariable

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c All of above

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d Non of these

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View Answer Constant

1 – α is the probability of_____________?


aAcceptance Region

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b Type-I error

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c Type-II Error

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d Rejection Region

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View Answer Acceptance Region

Power of test is denoted by _______________?


aβ

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bα

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c(1 – α )

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d(1 – β)

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View Answer (1 – β)

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