1. Aubree, a college freshman, took 15 hours her first semester. Below is her grade report.

Class	Credit Hours	Grade
Physics	4	D
Biology	4	B
Statistics	3	B
Seminar	1	A
Macroeconomics	3	A

Aubree's university uses a 4-point grading system, i.e., A=4, B=3, C=2, D=1, F=0.

a.	Compute Aubree's grade point average at the end of the semester. (Carry answer to the nearest hundredths)
b.	The next semester, Aubree retakes physics and makes a B. If this B replaces her old grade (D), what would her revised GPA be? (Assume the only class she took her second semester was physics.) (Carry answer to the nearest hundredths)

2. The average weekly salaries (in dollars) earned by teachers in 1994 are given below for five European countries.

Country Weekly Salary

France $1,519

Germany $2,214

Greece $976

Ireland $1,215

Italy $1,109

a) What is the range for salaries?

b) What is the standard deviation of the salaries? (Compute solution 2 decimal places