Relative Frequency Probabilities

Question

This month your roommate has helped do the daily dishes 8 times.

If it is the 29th day of the month, what is the chance that your roommate will do the dishes today (assuming the previous pattern mentioned above)?

% (Round to the nearest tenth.)

Answer 1

Since "it is the 29th day of the month," I assume that the roommate did the dishes 8 times in the previous 28, or 2/7.

 

2/7 ≈ 0.2857