Question

A pen is dropped on a hardwood floor and a 1 is recorded if the pen crosses a line and a 0 if it does not. Estimate the probability that the pen crosses a line in a single drop. 1 1 1 0 1 0 0 1 0 0 1 1 1

A. 3/13

B. 5/13

C. 5/8

D. 8/13

Answer 1

D. 8/13

Explanation:

Of the 13 drops, the pen crossed a line 8 times (there are 8 1's). So the probability is 8/13.