If eight coins are thrown randomly, show that the probability of obtaining at least 5 heads is 93/256
Sample size , n = 8
Probability of an event of interest, p = 0.5000
Binomial probability is given by , P(X=x) =
C(n,x)*px*(1-p)(n-x)
p(at least 5 heads)= p(5 heads)+ p(6heads)+p(7 heads)+p(8 heads)
=0.2188+0.1094+ 0.0313+0.0039
= 0.3633
If eight coins are thrown randomly, show that the probability of obtaining at least 5 heads...
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