Brain Weights. According to a study, brain weights of men in country A are normally distributed with mean 1.47 kg and standard deviation 0.15 kg. Apply the empirical rule to complete each sentence. Complete parts

(a) through (d).

a. Complete the sentence “Approximately 68% of the men have brain weights between kg and kg.”

b. Complete the sentence “Approximately 95% of the men have brain weights between kg and kg.”

c. Complete the sentence “Approximately 99.7% of the men have brain weights between kg and kg.”

d. Graph the areas enclosed by each set of values in parts (a)

through (c).