# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 244 - 248 of 253

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## Question 244

### Question

MCQ▾

Cramer-Rao Inequality provides a Lower bond to the variance of an ________ estimator for a parameter.

### Choices

Choice (4)Response

a.

Maximum Likelihood estimator

b.

Unbiased

c.

Consistent

d.

Sufficient

## Question 245

### Question

MCQ▾

A Statistical Hypothesis, which specifies the population completely, is known as

### Choices

Choice (4)Response

a.

Null Hypothesis

b.

Composite Hypothesis

c.

Simple Hypothesis

d.

None of the above

## Question 246

### Question

MCQ▾

The confidence level is 95 % . This means

### Choices

Choice (4)Response

a.

95 % of the samples will contain the population mean and 5 % of the samples do not contain the population mean

b.

95 % of the samples do not contain the population mean and 5 % of the samples will contain the population mean

c.

We are 100 % confident that the samples will contain the population mean

d.

None of the above

## Question 247

### Question

MCQ▾

In an Irreducible Markov chain:

### Choices

Choice (4)Response

a.

You can move from one state to another only in 1 direction

b.

You can only move between 1 of two states

c.

There is at least one state when you can go with 0 probability.

d.

All the states can communicate with each other

## Question 248

### Question

MCQ▾

Which of the following is a property of a renewable process?

### Choices

Choice (4)Response

a.

Inter arrival intervals are negative

b.

Inter arrival intervals are positive

c.

Inter arrival intervals may be identically distributed

d.

Question does not provide sufficient data or is vague