Anthony observes that when people are leaving class, about 50% turn left and about 50% turn right. Anthony wants to estimate the probability that fewer than 3 of the first 4 students will turn left when leaving class tomorrow.

To do this, he lets H represent turning left when leaving class and T represent turning right. He then flips a coin 4 times, recording the results. He repeats this process for a total of 20 trials.
HHTT THHT HTTT HTHH
HHTT HTHT THTH TTHH
HTTH HHHT TTHT
THHH THTH HHTT HTTT
HTTH HHTT HTHH HHTH

Drag and drop the correct fraction to the box to estimate the probability, using this simulation.
Estimated probability that fewer than 3 of the first 4 students leaving class tomorrow will turn left:
in fraction from pls!