Given a normal random variable X with mean of 70 and standard deviation of 12,the value of the standard normal random variable Z associated with X = 82 is larger than zero.

Question

Quizplus · Accepted Answer

To find the standard normal random variable Z associated with X = 82, we use the formula:

Z = (X - mean) / standard deviation

Substituting the given values, we get:

Z = (82 - 70) / 12 = 1

Since 1 is greater than 0, the answer is A) True.

Given a Normal Random Variable X with Mean of 70