In FOUR tossed of a coin , let x be the number of heads. calculate the expected values of x.
In FOUR tossed of a coin , let x be the number of heads. calculate the expected values of x.
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In FOUR tossed of a coin , let x be the number of heads. calculate the expected values of x.
Four coins tossed so no of outcome will be 16
Let x be the no of heads
so, x can take value 0 to 4 as the minimum head we get is 0 and max 4
P(x=0)= nCr = 4C0 = 1/total outcome = 1/16
same,
P(x=1) = 4/16
P(x=2) =6/16
P(x=3) = 4/16
P(x=4) =1/16