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20.5
Correct Answer:- Option-C

(Question6 3-1FZ is a standard normal variate, the proportion of items lying between 7=-0.5 and z=-3.0 is
۸7
B:-0.1915

D:-0.3098
Correct Answer:- Option-C

(Question64:Factorization theorem for sufficiency is known as
‘AvRao-Blackwell theorem

Cramer-Rao theorem

C:Chapman-Robins theorem

D:-Fisher-Neyman theorem

Correct Answer:- Option-D

Question6 5:If the expected value of an estimator is not equal to its parametric function r() , itis said to be a
Avunbiased estimator
Be-biased estimator

Ceconsistent estimator
Ds-none of the above.
Correct Answer:- Option-B

Question66An estimator 7; of @ is said to be more efficient than any other estimator 7” _n) of # if and only if

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D:-All the above

Correct Answer:- Option-D
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the sample variance, then s? is an unbiased estimate of

is the population variance and s°

Correct Answer:- Option-D
Question68="The sample median is estimate for the mean of normal population.
‘Avunbiased,
B:-consistent
Ceunbiased and consistent
Ds-none of the above.
Correct Answer:- Option-C
Question69-If a sufficient estimator exists it is a function of the estimator.
‘Armoment estimator
‘minimum chisquare estimator
C+maximum likelihood estimator

D:-none of the above
Correct Answer:- Option-C

Question70:The credit of inventing the method of moments for estimating the parameter goes to
AGR. A. Fisher
B:J. Neyman

D:-Karl Pearson
Correct Answer:- Option-D

Question? 1-Cramer-Rao inequality with regard to the variance of an estimator provides

A-upper bound on the variance

Jower bound on the variance

Crasymptotic variance of an estimator

D:-none of the above

Correct Answer:- Option-B

Question72:If Xj, 2¥ . »isayrantiom sample from a population N(0,o?

the sufficient statistic for 2” is

D:-none of the above
Correct Answer:- Option-B
Question73:Estimate and Estimator are
‘Avsynonyms
B-related to population

D:-none of the above
Correct Answer:- Option-C
Question74The idea of testing of hypothesis was first set forth by
ಟಟ
J.Neyman
CrE.L.Lehman
84
Correct Answer:- Option -B
‘Question75:A wrong decision about Mp leads to
Avone kind of error
B:-two kinds of errors
Crthree kinds of errors
D:-four kinds of errors
Correct Answer:- Option-B
Question76=In terms of type II error ‏م‎ and @ , the true parameter, the function 1-40) is called

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