1.
Homework Answers
Ans:
1)
z0.1 indicates the z score which has area 0.1 to left of the z score.
P(Z<=z)=0.1
z=normsinv(0.1)
z=-1.282
(use InvNorm function of calculator)
2)
b)
Binomial distribution with n=9 and p=0.8
mean=np=9*0.8=7.2
standard deviation=sqrt(9*0.8*(1-0.8))=1.2
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