ACET (Actuarial Common Entrance Test) Statistics: Questions 6  11 of 81
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Question number: 6
» Measures of Spread » Standard Deviation
Question
If A’s score in an exam was 80, with a mean of 60. What would be the standardized score for his exam if the standard deviation is 15?
Choices
Choice (4)  Response  

a.  1.52  
b.  1.33  
c.  1.72  
d.  1.25 
Question number: 7
» Discrete Random Variables » Coefficient of Skewness
Question
First deciles of data is 8, ninth deciles is 12 and fifth deciles is 6 then coefficient of skewness is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 8
» Measures of Spread » Skewness
Question
If mean = 25, median = 30 and standard deviation = 15, the distribution will be:
Choices
Choice (4)  Response  

a.  Positively Skewed  
b.  Normal  
c.  Negatively Skewed  
d.  Symmetrical 
Question number: 9
» Probabilities » Independence of Events
Question
The probability that a man will be alive after 20 years is 0.4 and the probability that his wife will be alive after 20 years is 0.3. Find the probability that at least one of them will be alive after 20 years.
Choices
Choice (4)  Response  

a.  0.12  
b.  0.58  
c.  0.18  
d.  All of the above 
Question number: 10
» Probabilities » Independence of Events
Question
When a coin is tossed twice, what is the probability of getting at least 1 head?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 11
» Correlation and Regression » Regression
Question
When the two regression lines intersect each other at 90°, then,
Choices
Choice (4)  Response  

a.  Intercept is zero  
b.  Correlation is zero  
c.  Regression coefficient is zero  
d.  All of the above 