Respuesta :
The probability that the pitcher will throw 4 or fewer pitches to a batter is 0.9.
What is Probability ?
The way to find the likeliness of an event is called Probability.
It is given that
Pitcher is throwing ball
The probability that he throws 4 or fewer pitches to a batter is = ?
The no. of favourable outcomes for the given condition is
P(X ≤4 ) = P(X=1) + P(X =2) + P(X=3)+P(X=4)
Total Outcomes = 15+20+40+15+20
Total outcomes = 100
Favourable outcomes = 15+20+40+15
Favourable Outcomes = 90
Probability = Favourable Outcomes / Total Outcomes \
Probability = 90/100 = 0.9
Therefore the probability that the pitcher will throw 4 or fewer pitches to a batter is 0.9.
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