ISS Statistics Paper II (New 2016 MCQ Pattern): Questions 189  192 of 246
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Question number: 189
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
90 % Confidence Interval for if a sample of size 1029, where
and
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All a. , b. and c. are correct 

Question number: 190
» Statistical Inference and Hypothesis Testing » Factorization Theorem
Question
If is a statistics for a parameter of the density function and for i = 1, 2, …, n can be factorized as , Then is a ________
Choices
Choice (4)  Response  

a.  Efficient Estimator 

b.  Consistent Estimator 

c.  Unbiased Estimator 

d.  Sufficient Estimator 

Question number: 191
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
What is the value of used in a 93 % confidence interval?
Choices
Choice (4)  Response  

a.  1.40 

b.  2.48 

c.  1.81 

d.  1.96 

Question number: 192
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
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.
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 
