Which of the following statements about the normal distribution is least accurate? The normal distribution: A. has a mean of zero and a standard deviation of one. B. is completely described by its mean and standard deviation C. is bell shaped, with tails extending without limit to the left and to the right. The correct answer is : A Isn’t is B is the answer ? Thanks.

A describes the standardized normal curve, not the normal curve. B is a true statement.