Question 207919
a biased coin has 1 in 10 chance of landing heads. If tossed 400 times, what is the estimated chance of getting exactly 40 heads?
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It's binomial with n=400, p = 0.1, x = 40.
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P(x+40) = 400C40(0.1)^40*(0.9)^360 = 0.0664
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Cheers,
stan H.