Homework Answers
Ans:
a)91st percentile
P(Z<=z)=0.91
z=normsinv(0.91)=1.34
b)22nd percentile
P(Z<=z)=0.22
z=normsinv(0.22)=-0.77
c)
99.9th percentile
P(Z<=z)=0.999
z=normsinv(0.999)=3.09
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