The weights of cockroaches follow a Normal distribution with mean 80 grams and standard deviation 2 grams. The figure below is the Normal curve for this distribution of weights. About what percent of the cockroaches have weights less than 78 grams?
A) 47.5 percent
B) 34 percent
C) 32 percent
D) 16 percent
E) 2.5 percent

Question

The weights of cockroaches follow a Normal distribution with mean 80 grams and standard deviation 2 grams. The figure below is the Normal curve for this distribution of weights.  About what percent of the cockroaches have weights less than 78 grams?
A) 47.5 percent 
B) 34 percent 
C) 32 percent 
D) 16 percent 
E) 2.5 percent

Quizplus · Accepted Answer

The Answer of The weights of cockroaches follow a Normal distribution with mean 80 grams and standard deviation 2 grams. The figure below is the Normal curve for this distribution of weights.  About what percent of the cockroaches have weights less than 78 grams?
A) 47.5 percent 
B) 34 percent 
C) 32 percent 
D) 16 percent 
E) 2.5 percent

The Weights of Cockroaches Follow a Normal Distribution with Mean