# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 118 - 122 of 253

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## Question number: 118

MCQ▾

### Question

is sufficient for if and only if the joint density function, of the sample values can be expressed in the form

where depends on and only through the value of and is independent of . This Theorem is known as

### Choices

Choice (4) Response

a.

Blackwell Theorem

b.

Rao-Blackwell Theorem

c.

Factorization Theorem

d.

Cramer-Rao Theorem

## Question number: 119

MCQ▾

### Question

Efficiency of sample mean as compared to median as an estimate of the mean of a normal population is

### Choices

Choice (4) Response

a.

64 percent

b.

157 percent

c.

360 percent

d.

22 percent

## Question number: 120

MCQ▾

### Question

Formula for obtaining 99 % confidence limits for the mean μ of a Normal population with mean μ and standard deviation σ are

### Choices

Choice (4) Response

a.

b.

c.

d.

All a. , b. and c. are correct

## Question number: 121

True-False▾

### Is the Following Statement True or False?

The null hypothesis is generally assumed to be ________ until evidence indicates otherwise.

## Question number: 122

MCQ▾

### Question

Suppose The confidence interval is given by the relation . Then is called as the

### Choices

Choice (4) Response

a.

Correlation Coefficient

b.

Confidence interval

c.

Confidence coefficient

d.

All of the above