Statistical Inference and Hypothesis Testing (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 165  168 of 222
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Question number: 165
» 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: 166
» 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: 167
» 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: 168
» 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.
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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 
