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

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## Question number: 118

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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.

Factorization Theorem

b.

Blackwell Theorem

c.

Rao-Blackwell Theorem

d.

Cramer-Rao Theorem

## Question number: 119

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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.

22 percent

b.

64 percent

c.

360 percent

d.

157 percent

## Question number: 120

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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

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True-False▾

### Is the Following Statement True or False?

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

## Question number: 122

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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 coefficient

c.

Confidence interval

d.

None of the above

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