Question

Talia tossed a penny many times. She got 30 heads and 70 tails. She said the experimental probability of getting heads was 30 70 . Explain and correct her error by completing the sentence. Enter your answer as a simplified fraction. She did not 30 and 70 to find the total number of trials. The experimental probability of landing on heads is

Answer 1

The experimental probability of landing on heads is 0.3

Explanation:

We are given the following in the question:

Number of heads = 30

Number of tails = 70

Talia said the probability of getting heads is
`(30)/(70)`.

She evaluated the wrong probability.

She did not considered total number of trials in the experiment.

Formula for probability:

`\text{Probability} = \displaystyle\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}`

Probability of heads =

`P(H) = (30)/(30+70) = (30)/(100) =0.3`

The experimental probability of landing on heads is 0.3