How do you find the z score of 12.5?

To find the Z score from the random variable you need the mean and variance of the rv.

To find the Z score from the random variable you need the mean and variance of the rv.

To find the Z score from the random variable you need the mean and variance of the rv.

To find the Z score from the random variable you need the mean and variance of the rv.

To find the Z score from the random variable you need the mean and variance of the rv.