What is the probability that a student has a low grade and i

What is the probability that a student has a low grade and is a business major? Low grade and an Accounting Major? Econ major doesn\'t have low grades? 30% Accounting 45% Business 25% Econ. 16.7% Accounting Low grades 11.1% business low grades 40% Econ low grades I am trying to figure out the correct Probability formulas to use.

Solution

What is the probability that a student has a low grade and is a business major?

11.1 % / 45 % = 0.2467

Low grade and an Accounting Major?

16.7 / 30 = 0.5567

Econ major doesn\'t have low grades?

0.25 / 1-0.40 = 0.4167