Statistical Inference and Hypothesis Testing (ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern)): Questions 126  131 of 222
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Question number: 126
» 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: 127
» 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: 128
» 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. 


Question number: 129
» Statistical Inference and Hypothesis Testing » Simple and Composite Hypotheses
Question
A hypothesis that says there is no statistical significance between the two variables is known as
Choices
Choice (4)  Response  

a.  Null hypothesis 

b.  Composite hypothesis 

c.  Alternative Hypothesis 

d.  Simple Hypothesis 

Question number: 130
» Statistical Inference and Hypothesis Testing » Moments and Least Squares
Question
The estimators obtained by the method of moments under general conditions are ________efficient than Maximum Likelihood Estimators.
Choices
Choice (4)  Response  

a.  Equally 

b.  More 

c.  Less 

d.  Question does not provide sufficient data or is vague 

Question number: 131
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
A school wants to study the number of days the students will be absent from school per year. It surveys attendance of 10 children and the number of days the children is absent from schools are
12  13 
9  11 
7  8 
4  9 
5  8 
Standard deviation Then 99 % Confidence interval on population mean is
Choices
Choice (4)  Response  

a. 


b.  5.64 ≤ μ ≤ 11.56 

c.  Both a. and b. are correct 

d.  None of the above 
