Packages in a package delivery service are divided into weight classes. Suppose the weight of the packages, X, in a specic class are Normally distributed between with the mean (average) of 8 pounds and standard deviation of 2.5 pounds.

1. Compute the probability that a package weighs between 8.4 and 7 pounds.

The potential answers are:

A: 0.2

B: 0.12

C: 0.24

D: 0.37

E: 0.22

2. Find the minimum weight for the heaviest 16 % of the packages.

The potential answers are:

A: 7.831

B: 16.073

C: 11.471

D: 10.486

E: 10.02