Statistical Inference and Hypothesis TestingConfidence Interval Estimation (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 31  34 of 73
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Question number: 31
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
A range computed using sample statistics to estimate an unknown population parameter with a given level of confidence is known as
Choices
Choice (4)  Response  

a.  Confidence interval 

b.  Time interval 

c.  Normal interval 

d.  Maximum Interval 

Question number: 32
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
Formula for 95 % Confidence interval for the variance of the Normal distribution when is known, is given by
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 33
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
A 95 % confidence interval is shown as . This means
Choices
Choice (4)  Response  

a.  Probability that lies in the interval 60.84 and 96.5 is 0.95 

b.  The length of the confidence interval is 35.66 

c.  60.84 and 96.5 are 95 percent confidence limits 

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

Question number: 34
» 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 
