Tiffany has white and black shoes in her shoe box. The probability of her pulling out a white pair of shoes is 25 . What is the chance of Tiffany randomly pulling out a black pair of shoes?
Since Tiffany has only white and black shoes in her shoe box, the sum of the probabilities of pulling out a white pair of shoes and pulling out a black pair of shoes should be 1.
Let's denote the probability of pulling out a black pair of shoes as x.
So, we have:
P(white shoes) = 0.25
P(black shoes) = x
P(white shoes) + P(black shoes) = 1
0.25 + x = 1
x = 1 - 0.25
x = 0.75
Therefore, the chance of Tiffany randomly pulling out a black pair of shoes is 75%.