ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 140  143 of 253
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Question number: 140
» Statistical Inference and Hypothesis Testing » CramerRao Inequality
Question
Which of the following options is appropriate for the CramerRao Inequality, where
is an unbiased estimator 
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 141
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
For a normal population , the variance of the sample mean and sample variance are given . Then the efficiency of median against mean is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 142
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
The Government conducts national survey to study about the home gardening.
A random sample of 250 households is taken, which have their own vegetable gardens. The average size of their gardens is 643 sq. ft. The calculated standard deviation is σ = 247 sq. ft. Then 90 % confidence interval for the mean size µ, of all household vegetable gardens is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 143
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
Formula for the Confidence interval with confidence coefficient for the variance of the Normal distribution when is known, is given by
Choices
Choice (4)  Response  

a. 


b. 


c.  Both a. and b. are correct 

d.  Question does not provide sufficient data or is vague 
