Question

Asked Mar 4, 2019

507 views

Step 1

**The normal distribution:**

A continuous random variable *X* is said to follow normal distribution if the probability density function of *X* is,

Step 2

**The standard normal distribution:**

A standard normal variable, the value of which is usually denoted by *z*, is a normal random variable with mean *μ* = 0 and standard deviation *σ* = 1.

Step 3

**Calculation for part (a):**

The *z* value to the left of the mean, such that 98.87% or 0.9887 proportion of the ar...

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