Homework Answers
Ans:
a)
z=(42-40)/(5/sqrt(36))
z=2.4
alpha=P(z>2.4)=0.008
b)
critical z value(right tailed)=1.645
sample mean cut off value,L=40+1.645*(5/sqrt(36))=41.37
L=41.37
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i got a=0.008 for question a.
i need help for question b
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