Probability Distributions

Question

	A	B	C	Total
Male	7	6	2	15
Female	11	17	19	47
Total	18	23	21	62

Giving a test to a group of students, the grades and gender are summarized above

If one student was chosen at random, find the probability (as a fraction) that the student was female.

Answer 1

There are a total of 67 student results. Of the 67 students 47 are female therefore there are 47/67 ways to select a female when selecting 1 student at random. The probability of one student selected is 47/67.