Find the following probabilities: (a) P(z > -0.78) (b) P(0.87 < z < 2.35)

Question

Question

Find the following probabilities:

(a) P(z > -0.78)

(b) P(0.87 < z < 2.35)

math Statistics-And-Probability

Answer 1

Answer #1

solution

(A)P(z > -0.78) =1 - P(z <-0.78 )

Using z table,
= 1 -0.2177

= 0.7823

probability =0.7823

(B) P(0.87 < z < 2.35)

= P(Z <2.35 ) - P(Z <0.87 )

Using z table,

= 0.9906-0.8078

probability=0.1828

Answer 2

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