Answer
a. $1-P(z\lt Z)$ = .0500
$P(z\lt Z)$ = 1-.0500 = 0.9500
From Table IV of Appendix B,
Z=1.645
b. $P(z\lt Z)$ = 0.025
From Table IV of Appendix B,
Z = -1.96
c. $P(z\lt Z)$ = 0.01
From Table IV of Appendix B,
Z = -2.33
d. $1-P(z\lt Z)$ = .0050
P($z\lt Z$) = 1-.0050 = 0.9950
From Table IV of Appendix B,
Z=2.58
Work Step by Step
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