# Statistical Inference and Hypothesis Testing-Confidence Interval Estimation (ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern)): Questions 45 - 48 of 73

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## Question number: 45

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

### Question

The health organization wants to study the mean weight of Indian women of the age group 30 - 40. A fourty woman of that age group is randomly selected and their weights in pounds are recorded.

 140 153 167 115 136 136 145 125 147 134 154 148 136 126 139 132 152 132 139 120 130 138 138 146 116 137 143 115 159 147 122 145 128 123 134 127 131 154 150 116

The calculated standard deviation is σ = 12.77. Then the 95 % confidence interval for the mean weight is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 46

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

### Question

Keeping the sample size same, suppose we decrease the level of confidence then the length of the Confidence interval will become

### Choices

Choice (4) Response

a.

Remains the same

b.

Smaller

c.

More

d.

Question does not provide sufficient data or is vague

## Question number: 47

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

### Question

Confidence intervals can be constructed ________

### Choices

Choice (4) Response

a.

Only for the parameter of population correlation

b.

Only for the parameter of the mean

c.

For various parameters

d.

All of the above

## Question number: 48

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

### Question

Confidence intervals for the parameters , of the Normal distribution having density function, in case of known variance , is given by

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

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