What is z0 if P(z > z0) = 0.12 P(z < z0) = 0.2 P(z >...

Question

Question

What is z₀ if
1. P(z > z₀) = 0.12
2. P(z < z₀) = 0.2
3. P(z > z₀) = 0.25
4. P(z < z₀) = 0.3

math Statistics-And-Probability

Answer 1

Answer #1

a) P(Z>Zo)= 0.12 1- P(Z czo) = 0.12 P( ZCZo) = 0.88 ². Zo= - 1.7499 (from Standard Normal table] P(Z < Zo)= 0.2 zo = -0.84162

Answer 2

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