Probability Distributions

Question

	A	B	C	Total
Male	7	8	15	30
Female	5	20	14	39
Total	12	28	29	69

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

What percent of the students got a C?

How do you round the answer to the nearest tenth of a percent? 

Answer 1

The desired percentage can be found by dividing the the total number of students who got a C (29) by the total number of students (69).

29/69 = 0.4202

We convert from decimal to a percentage by multiplying it by 100.

100*0.4202 = 42.02%

We round to the nearest tenth of a percent by rounding the number just to the right of the decimal. This gives us 42.0% as the percentage rounded to the tenths place.

Answer: 42.0%