ACET (Actuarial Common Entrance Test) Statistics: Questions 123  127 of 201
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Question number: 123
» Continuous Distributions » The Normal Distribution
Question
If then mean of
Choices
Choice (4)  Response  

a.  41  
b.  40  
c.  21  
d.  9 
Question number: 124
Question
If you have data on house prices and the distance of each of those houses from the city centre, and you are curious whether there is an association between distance from the city centre and the price of the house, with which of the following graphical techniques could you most easily see whether there is indeed such a relationship?
Choices
Choice (4)  Response  

a.  a bimodal histogram  
b.  a scatter diagram  
c.  Two histograms, one of house prices and one of distance from city centre  
d.  a bar graph with distance on the X axis 
Question number: 125
» Correlation and Regression » Correlation Coefficient
Question
If the relationship between two variables X and Y is given by 2x + 3y + 4 = 0, then the value of the correlation coefficient between x and y is
Choices
Choice (4)  Response  

a.  1  
b.  1  
c.  Negative  
d.  0 
Question number: 126
» Probabilities » Conditional Probabilities
Question
If A and B are two independent events such that then will be
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 127
» Discrete Distributions » Poisson
Question
If the standard deviation of a Poisson variable X is , then the probability that X is strictly positive is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 