The scores on a statistics test are Normally distributed with parameters mean = 80 and standard deviation = 196. Find the probability that a randomly chosen score is no greater than 70
Pr(X < 70) = Pr(z < -0.05) = 1 - Pr(z < 0.05) = 1 - 0.5199 = .4801.
The answer given in the text book is 0.2389 tho. Could someone please help me with this.