The standard normal distribution-: (A) It skewed to the left, (B) Has mean - 1.0, (C) Has standard detion = 0.0, (D) Has mean = 0
Answer is D. Ref:Parks 23rd edition pg 849 Stadardised normal curve : Smooth, bell-shaped, perfectly symmetrical curve based on an infinitely large number of observations . Total area of the curve= 1 Mean= 0 Standard detion = 1 Mean, median and mode all coincide.