ISS Statistics Paper II (New 2016 MCQ Pattern): Questions 173 - 176 of 246

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Question number: 173

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

A range computed using sample statistics to estimate an unknown population parameter with a given level of confidence is known as

Choices

Choice (4) Response
a.

Confidence interval

b.

Time interval

c.

Normal interval

d.

Maximum Interval

Question number: 174

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

Formula for 95 % Confidence interval for the variance σ2 of the Normal distribution N(μ,σ2), when μ is known, is given by

Choices

Choice (4) Response
a.

P[ns2χ20.025σ2ns2χ20.025]=0.95

b.

P[ns2χ20.975σ2ns2χ20.975]=0.95

c.

P[ns2χ20.025σ2ns2χ20.975]=0.95

d.

P[ns2χ20.975σ2ns2χ20.025]=0.95

Question number: 175

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

MCQ▾

Question

For a normal population (μ,σ2) , the variance of the sample mean and sample variance are given V(x¯)=σ2n V(MD)=πσ22n . Then the efficiency of mean against median is

Choices

Choice (4) Response
a.

E(Mean,Median)=2π

b.

E(Mean,Median)=π2n

c.

E(Mean,Median)=π2

d.

E(Mean,Median)=π

Question number: 176

» Statistical Inference and Hypothesis Testing » Rao-Blackwell Theorem

MCQ▾

Question

Rao-Blackwell Theorem enables us to obtain MVUE through:

Choices

Choice (4) Response
a.

Efficient statistics

b.

Complete Statistics

c.

Sufficient statistics

d.

Unbiased Estimator

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