Random variable with a standard normal distribution

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Assume Z is a random variable with a standard normal distribution ( the is, a mean =0 and a standard deviation of 1).
What is P(Z < -0.5) and P(Z > -0.5) ?

Assume X is a random variable that has a normal distribution with mean = 100 and standard deviation of 15.
What is P(X > 115)
*Describe your reasoning and show your calculations

Reference no: EM13743417

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