Statistical Inference and Hypothesis Testing-Confidence Interval Estimation (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 42 - 44 of 73

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Question number: 42

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

90 % Confidence Interval for μ if a sample of size 1029, where x¯=1.9

and σ=1.95

Choices

Choice (4) Response

a.

[1.8, 1.99]

b.

1.9±0.098

c.

1.9±1.951029

d.

All a. , b. and c. are correct

Question number: 43

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

What is the value of z used in a 93 % confidence interval?

Choices

Choice (4) Response

a.

1.40

b.

2.48

c.

1.81

d.

1.96

Question number: 44

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

MCQ▾

Question

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

Readings of the random sample of Indian women of the age group 30 - 40

What are the readings of the family?

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. What can you interpret from the 90 % and 99 % confidence interval for the mean weight?

Choices

Choice (4) Response

a.

The length of the 90 % confidence interval is more compared to 99 % interval

b.

The length of the 99 % confidence interval is more compared to 90 % interval

c.

None of the above

d.

Question does not provide sufficient data or is vague

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