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.Management Sciences
Category: Statistical Inference Mcqs
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
Sampling Error decrease by _______ the sample size?
A. Increase
B. Decrease
C. Sampling
D. Population
The Spearman Rank-Correlation test requires that the______________?
A. Data must be measured on the same scale
B. Data should be of ordinal scale at least
C. Data must be distribution at least approximately as a t-distribution
D. Data must be from two independent samples
For a biased estimator θˆ of θ, which one is correct_______________?
A. MSE(θˆ)=SD(θˆ)+Bias
B. MSE(θˆ)=Var(θˆ)+Bias2
C. MSE(θˆ)=SD(θˆ)+Bias2
D. MSE(θˆ)=Var(θˆ)+Bias
The first and starting point in test Hypothesis is ______________?
A. stating H1
B. stating Ho
C. L of significance
D. Test statistics
for two estimators T1=t1(X1,X2,….Xn) and T1=t1(X1,X2,….Xn) then estimators t1 is defined to be Rt1(θ)≤Rt2(θ) for all θ in Θ ?
A. Consistent estimator
B. Admissible estimator
C. Sufficient estimator
D. Minimax estimator
Criteria to check a point estimator to be good are_____________?
A. Consistency
B. All Above
C. Unbiasedness
D. Efficiency
__________ is the process of using sample information to reach?
A. Population
B. Biased
C. Unbiased
D. Increase
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