Question

What requirements are necessary for a normal probability distribution to be a standard normal probability​ distribution? choose the correct answer below.

a. the mean and standard deviation have the values of mu equals 0 and sigma equals 1.
b. the mean and standard deviation have the values of mu equals 1 and sigma equals 1.
c. the mean and standard deviation have the values of mu equals 0 and sigma equals 0.
d. the mean and standard deviation have the values of mu equals 1 and sigma equals 0?

Answer 1

A standard normal distribution has a mean of zero; half the bell curve is to the left of zero and half to the right.

A standard normal distribution has a standard deviation of 1 and follows the 68-95-99.7 rule; e.g. 99.7% of the probability is between -3 and +3.

Choice a

Answer 2

Option-(A):

• We know that the mean and standard deviation have the values of mu equals 0 and sigma equals 1.

• And it is after the professionals had performed the most valid procedures to obtain the results or we can say to have a more accurate answer to deal with for the rest of the mathematicians and professionals.