Question 1032434
An unbalanced coin shows heads 55% of the time. 
(a) If the coin is tossed 12 times, what is the probability of heads on all tosses?
P(all heads) = 0.55^12 = 0.000766 
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(b) Find the probability of at least one head in 12 tosses.
P(1<= x <=12) = 1 - P(x = 0) = 1 - 0.45^12 = 0.00003
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Cheers,
Stan H.
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