Anormal curve table tells you that the probability lying below z= -1 is .1587. this can be interpreted as: a. a random selection from the population has a 15.87% chance of being at or below z= -1 b. 15.87% of the area under the curve lies below z= -1 c. a random selection from the population has a 15.87% chance of being below z= -1. d. 15.87% of the area under the curve lies at or below z= -1 e. all of the above