Question

Elizabeth is going to flip a fair coin 100 times. What is the best prediction for the number of times that the coin will land tails up?

Answer 1

Answer:

50 times.

Step-by-step explanation:

We have been given that Elizabeth is going to flip a fair coin 100 times. We are asked to find the number of times the coin will land tails up.

Since we know that a fair coin has two equally likely possible outcomes and each flip has an equal chance of coming up heads or tails.

$\text{Probability}=\frac{\text{Number of favorable outcomes}}{\text{Total number of possible outcome}}$

$\text{Probability of getting tails in one flip}=\frac{1}{2}$

To find the number of times the coin will land tails up we will multiply the probability of getting tails in one flip by the number of times coin was flipped.

$\text{Possible number of getting tails in 100 flips}=\frac{1}{2}\times 100$

$\text{Possible number of getting tails in 100 flips}=50$

Therefore, the coin will land about 50 times tails up in 100 flips.

Answer 2

Answer:

Close to 50 times but probably not exactly 50 times

Step-by-step explanation: