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.Management Sciences
Category: Statistical Inference Mcqs
what is the probability of a type II error when α=0.05 ?
A. 0.025
B. 0.95
C. 0.05
D. Cannot be determined without more information
To perform a Runs test for randomness the data must be_______________?
A. Divided into at least two classifications
B. Divided into exactly two classifications
C. Quantitative
D. Qualitative
The values that separate the region of rejection and acceptance region are called _______________?
A. Critical value
B. Confidence limits
C. Confidence boundaries
D. None of these
Sample variance S2 is unbiased estimator of population variance 26 because ________________?
A. E(S2) = s2
B. E(u) = X
C. E(P) = P
D. Ux = u
Let Z1,Z2,….Zn be independent and identically distributedrandom variable, satisfying E[ι Zt ι]<∞. Let N be an integer valued random variable whose value n depends only on the values of the first n Z¡'s. Suppose E(N)< ∞, then E(Z1,Z2,….Zn)=E(N)E(Z) is called ?
A. Independence Equation
B. Sequential Probability Likelihood Equation
C. Neyman Pearson Lemma
D. Wald’s Equation
The critical value of a test statistic is determined from_____________?
A. The sampling distribution of the statistics assuming Null Hypothesis
B. calculations based on many actual repetitions of the same Experiment
C. The sampling distribution of the statistic assuming Alternative Hypothesis.
D. Non of these
If the conditional distribution of X1,X2,…..Xn given S=s, does not depends on θ, for any value of S=s the statistics S=s(X1,X2,…..Xn) is called______________?
A. Unbiased
B. Sufficient
C. Consistent
D. Efficient
If Ho is stated as Q = Qo< the alternate hypothesis in general stated________________?
A. Q Qo
C. Q ≠ Qo
D. None of these
Herbicide A has been used for years in order to kill a particular type of weed. An experiment is to be conducted in order to see whether a new herbicide, Herbicide B, is more effective than Herbicide A. Herbicide A will continue to be used unless there is sufficient evidence that Herbicide B is more effective. The alternative hypothesis in this problem is_____________?
A. Herbicide A is more effective than Herbicide B
B. Herbicide A is not more effective than Herbicide B
C. Herbicide B is more effective than Herbicide A
D. Herbicide B is not more effective than Herbicide A
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