ACET (Actuarial Common Entrance Test) Statistics: Questions 116  122 of 201
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Question number: 116
Question
If = 840, = 35 then n=
Choices
Choice (4)  Response  

a.  9  
b.  7  
c.  6  
d.  8 
Question number: 117
» Probabilities » Basic Rules of Probabilities
Question
A die is thrown thrice. Find the probability of getting an odd number atleast once.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 118
Question
The arithmetic mean of the following frequency distribution is 52.5. Find the missing frequency.
Classes  0  20  20  40  40  60  60  80  80  100 
Frequency  15  22  37  p  21 
Choices
Choice (4)  Response  

a.  21  
b.  26  
c.  25  
d.  20 
Question number: 119
» Probabilities » Basic Rules of Probabilities
Question
An urn contains 5 white and 3 black balls and 4 balls are drawn at random. The probability of getting equal number of black and white balls is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 120
» Measures of Spread » Variance
Question
In a distribution, . Find the value of standard deviation, variance and coefficient of variation.
Choices
Choice (4)  Response  

a.  4,16,200%  
b.  8,64,300%  
c.  4,16,100%  
d.  16,4, 400% 
Question number: 121
» Continuous Random Variables » Probabilities
Question
If probability density function (pdf) of a continuous random variable X is
.
Find
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 122
Question
The mean height of eight students is 152 cm. Two more students of heights 143 cm and 156 cm join the group. New mean height is equal to
Choices
Choice (4)  Response  

a.  153  
b.  151  
c.  152.5  
d.  151.5 