Posted by **Jen** on Wednesday, July 20, 2011 at 10:08am.

Mr. Doodle’s grade distribution over the past 3 years for a course in college algebra is shown in the chart below.

Grade Number

A 45

B 180

C 110

D 95

F 65

I 5

If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical probability that she receives at least a B. I think it's 1.7777 ??

- Math -
**bobpursley**, Wednesday, July 20, 2011 at 10:37am
Since when can a probabliity be greater then one?

- Math -
**Jen**, Wednesday, July 20, 2011 at 10:47am
is it 180/500 = 2.7777???

- Math -
**bobpursley**, Wednesday, July 20, 2011 at 10:49am
Jen, think. How can 180/500 be more than one.

- Math -
**Ms. Sue**, Wednesday, July 20, 2011 at 10:49am
Jen!! 2.777 is also greater than one!

- Math -
**bobpursley**, Wednesday, July 20, 2011 at 10:53am
Prob of at least B is = prob of A +prob of B= (45+180)/totalofallgrades

- Math -
**Jen**, Wednesday, July 20, 2011 at 11:05am
oooooooh i totally messed up!!! sorry i did 500/180 instead of 180/500....so it would be 0.36....sorry :(

- Math -
**Ms. Sue**, Wednesday, July 20, 2011 at 11:58am
No.

You forgot to include the A grades.

Bobpursley explained that above.

- Math -
**Jen**, Wednesday, July 20, 2011 at 12:11pm
225/500 = 0.45??

- Math -
**Ms. Sue**, Wednesday, July 20, 2011 at 12:14pm
Right.

- Math -
**Jen**, Wednesday, July 20, 2011 at 1:39pm
great! i get it...thank u :)

- Math -
**Tychiana Murray**, Monday, July 25, 2011 at 4:21pm
the answer would be D 95

## Answer This Question

## Related Questions

- Math - Mr. Doodle’s grade distribution over the past 3 years for a course in ...
- math - Mr. Doodle’s grade distribution over the past 3 years for a course in ...
- Math - Jane plans to take a college algebra course with Mr. Doodle, determine ...
- Math-probability - Jane plans to take a college algebra course with Mr. Doodle, ...
- Math 157-1 - Use the data in the grade-distribution Use the data in the grade-...
- Math - Use the data in the grade-distribution table below to construct a circle ...
- Math - Use the data in the grade-distribution table below to construct a circle ...
- Algebra - Business Computers English Foreign Languages Health Home Economics ...
- Math - If a grade was drawn at random from the data shown below, what is the ...
- statistics - how to identify the 5 W's in the problem of the student averages in...

More Related Questions