Talia tossed a penny many times. She got 20 heads and 55 tails. She said the experimental probability of getting heads was 20
55
. Explain and correct her error by completing the sentence. Enter your answer as a simplified fraction.

For this case we know that in many times a penny shoes 20 head and 55 tails so then the total of trials are:

Then we are interested in the probability of getting heads and if we use the Laplace formula we have:

And the correct way would be:

If we simplify we got:

And the error was because she use 55 as the total number of trials and that's not the size of the sample space and for this reason she got

Step-by-step explanation:

For this case we know that in many times a penny shoes 20 head and 55 tails so then the total of trials are:

Then we are interested in the probability of getting heads and if we use the Laplace formula we have:

And the correct way would be:

If we simplify we got:

And the error was because she use 55 as the total number of trials and that's not the size of the sample space and for this reason she got

answer: yes youre right.

step-by-step explanation:

56

step-by-step explanation: