ACET (Actuarial Common Entrance Test) Statistics: Questions 44  49 of 201
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Question number: 44
» Correlation and Regression » Regression
Question
When regression line passes through the origin then,
Choices
Choice (4)  Response  

a.  Intercept is zero  
b.  Regression coefficient is zero  
c.  Correlation is zero  
d.  Association is zero 
Question number: 45
» Continuous Random Variables » Probabilities
Question
How many 5 digit numbers can be formed using the digits 0,3, 5,7 & 9 which are divisible by 10 and no digits is repeated?
Choices
Choice (4)  Response  

a.  100  
b.  120  
c.  24  
d.  6 
Question number: 46
» Discrete Random Variables » Probabilities
Question
The arrival rate of customers at a service window of cinema hall follows a probability distribution with a mean rate of 45 per hour. If the service rate of the clerk follows Poisson distribution, with a mean of 60 per hours, what is the probability of having no customer in the system?
Choices
Choice (4)  Response  

a.  0.75  
b.  0.60  
c.  0.25  
d.  0.45 
Question number: 47
» Discrete Random Variables » Variance
Question
A machine on an average produces 5 % defective items. What are the mean and variance in a set of 32 items?
Choices
Choice (4)  Response  

a.  4,16  
b.  16,8  
c.  16,4  
d.  None of the above 
Question number: 48
» Probabilities » Bayes Theorem
Question
The probability of raining on Sunday is 0.07. If today is Sunday, what is the probability that it rains today?
Choices
Choice (4)  Response  

a.  0.07  
b.  1/7  
c.  1  
d.  0.49 
Question number: 49
» Continuous Random Variables » Variance
Question
Coefficient of variation can be calculated by
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
