Question

c) d) 120 200 10) We flip a fair coin 4 times. Define a random variable X = number of heads we obtain. Thus X=0,1,2,3, or 4 If p(x) denotes the probability function for X, find p(3). a) 1/16 b) 2/16 c) 3/16 d) 4/16 5/16

Answer 1

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10 we flip fain Coin 4 times. no. of heads X= 0,1,2, 3, 4 Sample space HH H H, H H H T, H HTH, HTHH, %3D THAH, HHTT, HTTH, HTHT, TTHH, THTH, THHT, TTHT, TTT H, HTTT, THTT, No. of 3 heads P(3) %3D no. of sample space To tal option- O 16