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BCA 4th sem Mathematics paper 2017

UniversityGGSIPU, New Delhi
CourseBCA
Semester4
SubjectMathematics
Year2017
Downloads188
Uploaded By User Image
Sourabh Bajaj
200
 
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(a) Show that 

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(b) Estimate the missing term in the following table

 

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(c) A random variable x has the following probability function 


find the value of k. 


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(d) If a random variable has a Poisson distribution such that P(1) - P(2),find the mean of the distribution. 

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(e) For a normally distributed variable with mean 1 and S.D 3, find the probability that 

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(f) If X and Y are independent binomial variables such that X-b(5, 1/2),  (7, 1/2). Find P [X+Y=3). 

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(g) Find the Lagrange interpolating polynomial that fit the following data values.

  

Also interpolate at x=1.5 

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(h) Events A and B are such that


    

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(i) The expected value of a random variable x is 2 and its variance is 1.Find the variance of 3x+4. 

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(i) if two regression coefficients are 0.8 and 0.2. What would be the value of coefficient of correlation? 

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(a) A bag containts 40 tickets numbered 1,2,3,.,40 of which four are drawn at random and arranged in ascending order  Find the probability of t3 being 25. 

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(b) The probability that Nirmal will solve a problem is 2/3 and the probability that Satyajit will solve it is  What is the probability that (i) the problem will be solved (b) neither can solve it. 

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(a) The content of three urns are: 1 white, 2 red, 3 green balls; 2 white, 1 red, 1 green balls and 4 white, 5 red, 3 green balls. Two balls are drawn from an urn chosen at random. These are found to be one white and one green. Find the probability that the balls so drawn come from the third urn.

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(b) For what value of n is 

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(a) of the moment generating function of normal distribution is 

       

         

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(b) Calculate the coefficient of rank correlation from the following. 

          

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(a) Find   and variance for the following distribution.

  

        

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(b) From the given data obtain the two regression equations using the method of least square.

              

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(a) Express  in factorial form and hence evaluate 

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(b) Using Newton-Raphson method evaluate to two decimal figures, the root of the equation ex = 3x, lying between 0 and 1. 

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(a) Use Newton's interpolating formulae to find y when x =1.85 and x=2.4 from the data. 

     

       

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(b) Find a root of x3-5x+3 = 0, by Newton-Raphson method.

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(a) Solve by Jacobi's Method

4x + y + 32 = 17

x + 5y + z = 14

2x-y + 8z = 12 

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(b) Given that

  

Find  and  at  and 

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(a) Apply LU Method to solve the equations 3x+2y+7z =4,  2x+3y+z=5,  3x+4y+z=7 

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(b) Calculate the value of  by simpson' s 1/3 rule using 1 1 ordinals. 

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