1.

If a fair coin is tossed three times the probability function p(x) of the number of heads x is _______(a) X0123P(x)1/81/82/83/8(b) X0123p(x)1/83/83/81/8(c) X0123p(x)1/81/82/83/8(d) None of these

Answer»

(b) 

X0123
p(x)1/83/83/81/8

The sample space is HHH, HHT, HTH, HTT, THH, THT, TTH and TTT 

Number of heads is 0, 1, 2, 3 with probability 1/8, 3/8, 3/8 and 1/8


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