Suppose X is a random variable with mean and variance A random sample of size n =38 is selected from this population. Suppose X is a random variable with mean and standard deviation A random...

Suppose X is a random variable with mean

and variance

A random sample of size n =38 is selected from this population.

Suppose X is a random variable with mean

and standard deviation

A random sample of size n = 36 is selected from this population.