For z 285 in which of the following graphs does the shaded

For z < 2.85, in which of the following graphs does the shaded area represent the correct proportion? PLEASE EXPLAIN.

Solution

Answer: Graph I

For z < 2.85, shaded area should be shown all the area left side of z value 2.85.

( graph II is middle area, Graph III is left of some neagtive z value and Graph IV is two tail areas)