SOLUTION: I need someone to show me how to do these homework questions please. 5. Suppose an A is worth 4 points, a B 3 points, a C 2 points, a D 1 point, and an F 0 points. If I earned

Algebra ->  Probability-and-statistics -> SOLUTION: I need someone to show me how to do these homework questions please. 5. Suppose an A is worth 4 points, a B 3 points, a C 2 points, a D 1 point, and an F 0 points. If I earned       Log On


   



Question 440809: I need someone to show me how to do these homework questions please.
5. Suppose an A is worth 4 points, a B 3 points, a C 2 points, a D 1 point, and an F 0 points. If I earned A’s in 60%, B’s in 25%, C’s in 10%, and D’s in 5% of the college credits I have completed, what’s my GPA (one digit after decimal point)?
Suppose the life of a certain brand of vacuum cleaner is normally distributed with a mean life of 12 years and a standard deviation of 4 years. A vacuum cleaner is randomly chosen.
7. Find the probability that it will last less than 10 years (4 digits after decimal point).
8. Find the probability that it will last more than 16 years (4 digits after decimal point).

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
5.
.6*4+.25*3+.1*2+.05*1
=3.4
.
Ed