3)using excel and Given that z is a standard normal random variable, what is the value...

Question

Question

3)using excel and Given that z is a standard normal random variable, what is the value for z0 if:

a. P(z > z0) = 0.12

b. P(z < z0) = 0.2

c. P(z > z0) = 0.25

d. P(z < z0) = 0.3

math Statistics-And-Probability

Answer 1

Answer #1

a) z0=1.17.................by using =NORMSINV(1-0.12)

b) z0=-0.84......................=NORMSINV(0.2)

c) z0 =0.67................by using =NORMSINV(1-0.25)

d) z0=-0.52......................=NORMSINV(0.3)

Answer 2

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