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 Coecient of Variations of this Normal random variable.

The potential answers are:

A: 0.33

B: 0.27

C: 0.31

D: 0.29

E: 0.25

2. Compute the probability that a package weighs at most 5.4 pounds.

The potential answers are:

A: 61.79%

B: 8.97%

C: 47.05%

D: 14.92%

E: 54.97%

3. Compute the probability that a package weighs at least 5.6 pounds.

The potential answers are:

A: 70.88%

B: 83.15%

C: 82.28%

D: 11.51%

E: 73.4%

4. Find the probability that a package weighs between 5.9 and 9.1 pounds.

The potential answers are:

A: 46.96%

B: 73.46%

C: 41.73%

D: 55.44%

E: 32.68%

5. 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

6. Compute the maximum weight for the lower 18 % of the packages.

The potential answers are:

A: 3.927

B: 9.372

C: 6.728

D: 8.888

E: 5.712

7. 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