1-The weight of a group of Business Administration students has a normal distribution, with a mean of 148 pounds and a standard deviation of 22 pounds. Using the empirical rule, what is the approximate percentage of students between: a) 104 and 192 pounds, b) 82 and 214 pounds?

2-The mean height of men is 67 inches and their standard deviation is two point five (2.5) inches. Jos is 69 inches tall (Triola, 2004).

a) What is the difference between Jos's height and the average?

b) Approximately how many standard deviations from the mean is Jos's height? Use the empirical rule to answer this question.

c) Convert Jose's height into a Z score.

d)If we consider that "common" heights are those that correspond to Z scores between -2 and 2, is Jos's height common or uncommon?

3-With a mean of 98.20 and a standard deviation of 0.62, convert the following temperatures to Z scores.

a) 97.38

b) 98.70

c) 98.30

4- Which is relatively better: a score of 88 on a psychology test or a score of 45 on an economics test? Scores on the Psychology test have a mean of 90 and a standard deviation of 10. Scores on the economics test have a mean of 51 and a standard deviation of 5.5. Use the measures of relative position to answer this exercise (Z Score) (Triola, 2004).