Question # 1

The probability associated with confidence interval is called:

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Level of confidence

Confidence coefficient

Both A and B

Confidence limits

A single value used to estimate a population value is called:

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Interval estimate

Point estimate

Confidence interval

Level of confidence

100(1-α)% confidence interval for population proportion of success,&=nbsp;π is

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P (L <μ < U) = 1 - α

P (L <σ < U) = 1 - α

P (L <π< U) = 1 - α

P (L <P&=nbsp;< U) = 1 - α

A specific value of an estimator computed from the sample data is called

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estimation

estimate

interval estimate

point estimate

Estimation is of two types:

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One sides and two sides

Type I and type II

Point estimation and interval estimation

Biased and unbiased

(1-α) is called:

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Critical value

Level of significance

Level of confidence

Interval estimate

Small sample has less than

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50 values

45 values

30 values

35 values

An estimator is ------------ if its expected value is equal to the population parameter to be estimated

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bad

biased

unbiased

none of these

A range of values within which the population parameter is expected:

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Confidence interval

Confidence coefficient

Confidence limits

Level of significance

The process of making estimates about the population parameter from a sample is called:

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Statistical independence

Statistical inference

Statistical hypothesis

Statistical decision

The distance between an estimate and the estimated parameter is called:

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Sampling error

Standard error

Bias

Error of estimation

If the observations are paired and the number of pairs is n, then the number of degree of freedom is equal to

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n

n - 1

2n

2n - 1

Confidence intervals which are often used in practice are

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90%

95%

98%

all of these

If 1-α = 0.90, the value of Z_a/2 is:

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1.645

1.96

2.326

2.575

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biased

unbiased

positively biased

none of these

The endpoints of a confidence interval are called:

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confidence coefficient

Confidence limits

Error of estimation

Parameters

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best estimators

biased estimators

unbiased estimators

normal estimators

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Statistics Ics Part 2 Chapter 3 Online Test MCQs With Answers

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