ISS Statistics Paper II (New 2016 MCQ Pattern): Questions 148  152 of 246
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Question number: 148
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
It is given that sample mean is 127.3, standard deviation is 19 and sample size is 3534. Then the 95 % confidence Interval is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 149
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
Confidence Interval (CI) is based on
Choices
Choice (4)  Response  

a.  The point estimate or sample mean 

b.  Desired level of confidence 

c.  Standard error of the point estimate 

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

Question number: 150
» Statistical Inference and Hypothesis Testing » CramerRao Inequality
Question
CramerRao Inequality provides a ________ to the variance of an unbiased estimator for a parameter.
Choices
Choice (4)  Response  

a.  Lower bound 

b.  Upper bound 

c.  Upper bound and Lower bound 

d.  All of the above 

Question number: 151
» Statistical Inference and Hypothesis Testing » Simple and Composite Hypotheses
Question
________ states that there is statistical difference between two variables.
Choices
Choice (4)  Response  

a.  Simple Hypothesis 

b.  Null Hypothesis 

c.  Alternative Hypothesis 

d.  Statistical hypothesis 

Question number: 152
» 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 % confidence interval for the number of hours of study per day is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

