Statistical Inference and Hypothesis TestingConfidence Interval Estimation (ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern)): Questions 35  39 of 73
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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. 


Question number: 38
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
Suppose we take a random sample from some population and obtain a 96 % confidence interval for the population mean, , then which quantity is guaranteed to be in the interval?
Choices
Choice (4)  Response  

a.  μ 

b.  s 

c. 


d.  μ & s 

Question number: 39
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
Given the probability statement that
Which of the following statement is correct in respect of given probability statement?
Choices
Choice (4)  Response  

a.  The confidence interval is 11.32 

b.  4.35 and 15.67 are 90 percent confidence limits 

c.  Probability that lies in the interval 4.35 and 15.67 is 0.90 

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