Question

Sally rolls a fair number cube 8 times and gets a 5 twice. What is the experimental probability that on her next roll, she will roll a 5?

I know that experimental probability is f/n, so the number of trials is now 9, but is the number of times Sally roll a 5 two times or three?

Answer 1

The 1st thing you would do is figure the percent of a 5 coming up from the first 8 rolls Sally did.

5/8 = 25%

The chance that she would roll a 5 on the 9th attempt is 25%

Answer 2

But, we know that the 5 came up two times in the first eight rolls.