Question

1. The table below shows the results of flipping two coins. How does the experimental probability of getting at least one tails compare to the theoretical probability of getting at least one tails?

2. The probability of winning a game is 15%. If you play 20 times, how many times should you expect to win?

Answer 1

The answer for 3. is B.

Answer 2

1- Answer B

2- Answer B

1-

Probability of getting a head = .5

Probability of getting a tail = .5

possible outcomes of getting at least one tail = HT, TT, TT

Probability in each of the above cases = .5*.5 + .5*.5 + .5*.5 = .75

This will be theoretical probability = .75

as per the question , experimental probability of getting at least one tail =

counting number of outcomes of(HT,TH,TT) ÷ total number of outcomes

experimental probability = (22+34+16) ÷ 100 = .72

So, theoretical probability is 3% greater than experimental probability

2-

You can win only 15 % times.

so, out of 20 games, you can win = 15 % of 20 = 3

so total number of times you can win = 3 times