Statistical Inference and Hypothesis TestingConfidence Interval Estimation (ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern)): Questions 1  5 of 73
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Question number: 1
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
It is given that , and . Then the 95 % Confidence Interval for the population mean
Choices
Choice (4)  Response  

a.  1725.61 ± 222.45 

b.  1725.61 ± 897.36 

c.  18 ± 222.45 

d.  1725.61 ± 110.69 

Question number: 2
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
The diameter of cylindrical rods is assumed to be normally distributed with a standard deviation of 0.91 cm. A sample of 25 rods has a mean diameter of 4.5 cm. 95 % confidence limits for population mean are:
Choices
Choice (4)  Response  

a.  1.9±0.098 

b. 


c. 


d.  All of the above 

Question number: 3
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
As the level of confidence level decreases, the size of the corresponding interval will
Choices
Choice (4)  Response  

a.  Increase 

b.  Decrease 

c.  Remains the same 

d.  Question does not provide sufficient data or is vague 

Question number: 4
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
It is given that , , . then 90 % Confidence Interval for is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

Question number: 5
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
is the Confidence intervals for when …… and is the Confidence intervals for when …. .
Choices
Choice (4)  Response  

a.  and 

b.  and 

c.  and 

d.  All of the above 
