15) The probability that a COS student is left-handed is 0.09. If 30 COS students are selected at random, find the probability that at least 4 are left-handed.
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The probability that a COS student is left-handed is $p = 0.09$. The number of students selected is $n = 30$. We can model this situation using a binomial distribution with parameters $n=30$ and $p=0.09$. The probability mass function is given by: $P(X=k) = Show more…
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