Answer:
D. 0.80
Step-by-step explanation:
Given the formula:
P(A or B) = P(A) + P(B) - P(A and B)
Substitute the given values into the equation:
P(A or B) = 0.60 + 0.30 - 0.10
Solve:
P(A or B) = 0.80
Hope this helps :)
The value of P(A or B) is 0.80, the correct option is D.
Probabilityis the measure of the likliness of an event to happen.
The probability has a range from 0 to 1, 0 denotes uncertainty and 1 indicates certainty.
The probability of an event A happening is given by P(A) = 0.60
The probability of an event B happening is given by P(B) = 0.30
Probability formula for independent events A and B: p(A and B) = p(A) * p (B). You have an independent event if the probability of one occurrence has no bearing on the likelihood of the other.
The likelihood of one is simply multiplied by the probability of another.
P(A and B) = 0.10
The likelihood that events A or B will occur is the simple sum of the probabilities if occurrences A and B are mutually exclusive, if not the intersection is subtracted.
The probbaility that either A or B happens is determined as:
P( A or B) = P(A) + P(B) - P(A and B)
P( A or B) = 0.60 + 0.30 - 0.10
P( A or B) = 0.80
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