8/14/2019 Nr210402 -Probability & Random Variables

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Code:13070 NR Set 1

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

II.B.TECH - I SEMESTER SUPPLEMENTARY EXAMINATIONS NOVEMBER, 2009

PROBABILITY & RANDOM VARIABLES

(Common to ECE, ETM)

Time: 3hours Max.Marks:80

Answer any FIVE questionsAll questions carry equal marks

- - -

1. Consider a bag consisting of 100 items of which 80 are non defective and 20 are

defective. If 2 items have to be chosen from the bag

a) With replacementb) Without replacement. What is the probability of getting first item defective and the

second item non-defective? [8+8]

2. Determine the constant b such that the function

f(x, y) = 3xy for 0 1 , 0 x y b< <