Question

WIJ
Dansalo
let X denote the neember of heads
in a single toss of 4 fair Coins,
Determine P(
x2) =​

Answer 1

Given :   X denote the number of heads in a single toss of 4 fair Coins,

To Find : P(x)  when x = 2

Solution:

P(x) = ⁿCₓpˣqⁿ⁻ˣ

n = 4

x = 2

p = 1/2  probability of a head

q = 1 - p  = 1/2  

P(2) =  ⁴C₂(1/2)²(1/2)²

= 6/16

= 3/8

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