Let z denote a random variable having a standard normal distribution. Determine each of the following probabilities. a) $P ( z

Question

Let z denote a random variable having a standard normal distribution. Determine each
of the following probabilities. a) $P ( z < 1.28 )$
b) $P ( z < - 1.05 )$
c) $P ( z > - 2.51 )$
d) $P ( - 1.30 < z < 1.54 )$

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The Answer of Let z denote a random variable having a standard normal distribution. Determine each
of the following probabilities. a) $P ( z < 1.28 )$
b) $P ( z < - 1.05 )$
c) $P ( z > - 2.51 )$
d) $P ( - 1.30 < z < 1.54 )$

Let Z Denote a Random Variable Having a Standard Normal P(z<1.28)P ( z < 1.28 )P(z<1.28)

Let Z Denote a Random Variable Having a Standard Normal $P ( z < 1.28 )$