Statistical Inference and Hypothesis TestingConfidence Interval Estimation (ISS Statistics Paper II (New 2016 MCQ Pattern)): Questions 34  37 of 73
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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 
Question number: 35
» 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: 36
» 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: 37
» 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. 
