Question: Assume Z is a random variable with a standard normal distribution ( that is, a mean of =0 and a standard deviation of 1). What

Assume Z is a random variable with a standard normal distribution ( that is, a mean of =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

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