Homework Answers
Answer #1
a)
P(Y = 8)
==BINOM.DIST(8,25,0.4,0)
= 0.119979
=0.12
b)
P(Y = 8)
= P(7.5 < Y < 8.5)
mean = np =25*0.4 = 10
sd =sqrt(npq) = sqrt(10*0.4*0.6) = 1.549193
hence
P(7.5 < Y < 8.5)
= 0.1132
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