I in Terms of a Formula the Standardized Value of Z

Multiple Choice

i. In terms of a formula the standardized value of z is found by z = (X - µ) /σ.
ii. The standard normal distribution is a normal distribution with a mean of 0 and a standard deviation
of less than 10.
iii. A computed z for X values to the left of the mean is positive.

A) (i) , (ii) and (iii) are all correct statements
B) (i) is a correct statement but not (ii) or (iii) .
C) (i) and, (iii) are correct statements but not (ii) .
D) (i) and, (ii) are correct statements but not (iii) .
E) All statements are false