Vicki would like to estimate the probability of tails coming up fewer than 2 times in 3 coin flips. To do this, she has a computer randomly select 0 or 1 three times, with 0 representing heads and 1 representing tails. The results of 15 trials are shown in the table. 110 111 000 011 000 010 101 100 000 000 111 101 110 101 111 What is Vicki's estimated probability, based on this simulation? Enter your answer as a fraction, in simplified form, in the box.