4 Tim carried out an experiment where he tossed 20 coins together and observed
the number of heads showing. He repeated this experiment 10 times and got
the following results:
11, 9, 10, 8, 13, 9, 6, 7, 10, 11
a) Use Tim’s data to get the probability of obtaining a head.
b) He tossed the 20 coins for the 11th time. How many heads should he expect
to get?
c) He tossed the coins 1000 times. How many heads should he expect to see?