ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 179  183 of 246
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Question number: 179
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
In a college survey, children were asked how many hours they study per day. A sample of 22 children is collected. The mean was 3.25 hours with a standard deviation of 1.57 hours. Then 95 % and 99 % confidence interval for the number of hours of study per day is
Choices
Choice (4)  Response  

a.  and 

b.  and 

c.  and 

d.  All of the above 

Question number: 180
» Statistical Inference and Hypothesis Testing » Sufficient Estimator
Question
A statistic is called as ________ Estimator for the parameter θ, if the conditional distribution of given T does not depend on θ.
Choices
Choice (4)  Response  

a.  Unbiased 

b.  Maximum Likelihood estimator 

c.  Efficient 

d.  Sufficient 

Question number: 181
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
A survey of 200 factory workers provides a sample mean of 7.10 hours worked. What is the 95 % confidence interval based on this sample. Calculated standard deviation is 5 hours.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Both a. and b. are correct 

Question number: 182
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
The 99 % confidence interval for of the normal population is given by
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 183
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
It is given that n = 1029, and . Then the 90 % Confidence Interval for the population mean is given by
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

