The probability of a certain baseball player hitting a foul ball is 1/5. How many foul balls would you expect her to hit after 90 swings?
The expected number of foul balls is equal to the probability of hitting a foul ball multiplied by the number of swings.
Expected number of foul balls = probability of hitting a foul ball x number of swings
Expected number of foul balls = (1/5) x 90
Expected number of foul balls = 18
Therefore, we would expect the baseball player to hit 18 foul balls after 90 swings.
To find the number of foul balls the baseball player would be expected to hit after 90 swings, we can multiply the probability of hitting a foul ball (1/5) by the total number of swings (90).
Expected number of foul balls = (1/5) * 90 = 18
Therefore, we would expect the baseball player to hit approximately 18 foul balls after 90 swings.