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.Management Sciences
Category: Statistical Inference Mcqs
An estimator Q is an unbiased estimator of the population parameter Q if ___________________?
0
A. E(x) = µ
B. E(Q) =Q
C. E(Q) =Q
D. E(P) = P
Let X1,X2,…Xn be a random sample from the density f(x;(θ), where θ may be vector. If the conditional distribution of X1,X2,…Xn given S=s does not depend on θ for any value of s of S, then statistic is called?
A. Minimal sufficient statistic
B. Sufficient statistic
C. Efficient
D. Minimax statistics
When using the sign test, if two scores are tied, then_____________?
A. We count them
B. We discard them
C. We depends upon the scores
D. non of these
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
Which of the following test use Rank Sums____________?
A. Kruskal-Wallis and Wilcoxon tests
B. Runs test
C. Chi-Square and sign test
D. F test
Type II error is committed when the null hypothesis is _________________?
A. Rejected when it is true
B. Rejected when it is false
C. Accepted when it is true
D. Accepted when it is false
The minimum variance unbiased estimator of the population mean is _______________?
A. 6/√n
B. S/√n
C. S2/n
D. 6x/√n
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