Homework Answers
1) X follow binomial distribution with n = 13 , p = 0.8984
P(X >= 10) = 0.9640
2)
E(X) = np = 13 * 0.8984 = 11.6792
sd(S) = sqrt(npq) = sqrt( 13 * 0.8984 * (1 - 0.8984) = 1.08931
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