ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 210  214 of 253
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Question number: 210
» Statistical Inference and Hypothesis Testing » Minimum Variance Unbiased Estimators
Question
If a most efficient estimator and a less efficient estimator with efficiency tend to joint normality for large samples, has ________ correlation with
Choices
Choice (4)  Response  

a.  Zero  
b.  No correlation  
c.  Negative  
d.  All of the above 
Question number: 211
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
Suppose we have , , Then to compute 95 % confidence for which critical point is used?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c.  zα=z0.025α  
d. 

Question number: 212
» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator
Question
An estimator is efficient, if its variance is________ the variance of any other estimator.
Choices
Choice (4)  Response  

a.  Similar to  
b.  More than  
c.  Less than  
d.  Either b or c 
Question number: 213
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
Suppose we wish to estimate the average height of the tigers in India. We take a sample of 130 tigers and measure their heights. The mean height is 98.249 cms. The calculated standard deviation is cms, then the confidence interval for the population mean at 95 % confidence limit is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 214
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
Suppose we want to estimate the average weight of cow in India. We draw a random sample of 1,000 cows and weigh them. The mean was 180 pounds with a standard deviation of 30 pounds. What is the 95 % confidence interval?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
