ACET (Actuarial Common Entrance Test) Statistics: Questions 109  115 of 201
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Question number: 109
Question
If the arithmetic mean and harmonic mean of two positive numbers are 4 and 16, then their geometric mean will be
Choices
Choice (4)  Response  

a.  4  
b.  16  
c.  64  
d.  8 
Question number: 110
» Correlation and Regression » Regression
Question
For 10 observations on price (x) and supply (y), the following data was obtained:
What is the line of regression of y on x?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 111
» Discrete Distributions » Discrete Uniform
Question
What is the mean and variance of the random variable X which is distributed uniform discrete on
Choices
Choice (4)  Response  

a.  5,6.67  
b.  6,5.7  
c.  6.67,5  
d.  5,25 
Question number: 112
» Probabilities » Independence of Events
Question
If A and B are two independent events, and
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 113
» Discrete Random Variables » Mean, Mode, Median
Question
The probability distribution of a discrete random variable is given as follows
x  1  2  3  4  5 
 0.2  0.1  0.1  0.3  0.3 
The median and mean of X are
Choices
Choice (4)  Response  

a.  3.4,3.5  
b.  3.2,3.5  
c.  3.5,0.68  
d.  3.5,3.4 
Question number: 114
Question
The greater of the two numbers whose arithmetic mean is 34 and geometric mean is 16 is
Choices
Choice (4)  Response  

a.  64  
b.  68  
c.  256  
d.  4 
Question number: 115
» Probabilities » Basic Rules of Probabilities
Question
Let A and B are two events such that , then
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
