Homework Answers
Ans:
1)
Mean=22.65
standard deviation=0.80
z(21.5)=(21.5-22.65)/0.80=-1.4375
z(24.25)=(24.25-22.65)/0.80=2
P(-1.4375<z<2)=P(z<2)-P(z<-1.4375)
=0.9773-0.0753=0.9020 or 90.20%
2)Option D is correct.
Once an individual is selected, the individual cannot be selected again
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