Hat Blue
Hat Blue
Selecting four random balls from a hat containing 3 white and 5 blue. Probability that 2 OR 3 are white?
Four balls are selected at random without replacement from a hat containing three white balls and five blue balls. Find the probability that two or three of the balls are white.
How do I do this?
Method 1: Find the probability that 2 are white. Find the probability that 3 are white. Add.
Method 2: Find the probabilities that 0, 1, or 4 are white. Add. Subtract the total from 1.
Both look about equally messy.
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