The figure shows a standard normal N(0, 1) distribution. Find the z value for the shaded area. C.2 gives P(z

Question

The figure shows a standard normal N(0, 1) distribution. Find the z value for the shaded area.  C.2 gives P(z < -1.75) = .0401 or use Excel =NORM.S.INV(0.04) = -1.75.
A)-1.98 
B)-1.87 
C)-1.75 
D)-1.62

Quizplus · Accepted Answer

The shaded area represents the probability of obtaining a z-score less than some value, which we can find by referring to a standard normal distribution table or using a calculator function such as NORM.S.INV. In this case, the shaded area corresponds to a probability of 0.04, which corresponds to a z-score of -1.75. Therefore, the correct choice is C, -1.75.

The Figure Shows a Standard Normal N(0, 1) Distribution