The missing probability for the given mutually exclusive event is 3/10
What is Mutually Exclusive Event?
Mutually exclusive events are those events that do not occur at the same time.
Here, Let P(A) be x,
P(B) = 11/20, P(A or B) = 17/20, P(A and B) = 0
By Addition theorem of Probability,
P(A or B) = P(A) + P(B) - P(A and B)
17/20 = x + 11/20 - 0
x = [tex]\frac{17}{20} - \frac{11}{20}[/tex]
x = 6/20
x = 3/10
Thus, The missing probability for the given mutually exclusive event is 3/10
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