Problema Solution
a pretzel stick 2.5 units long is broken into two pieces at a point located randomly along its length. The lengths of the broken pieces are measured, rounded to the nearest integer, and then added. what is the probability that the sum is 3?
Answer provided by our tutors
Let 'x' the length of the stick from the left to the break point.
The desired sum is 3 if and only if x = 0, 0.5 <= x <= 1, 1.5 <= x <= 2, or x = 2.5.
The probability is:
p = (0.5+0.5)/2.5
p = 1/2.5
p = 0.40