Probability Formula:
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The probability of mutually exclusive events A or B occurring is calculated by simply adding the individual probabilities of each event. Mutually exclusive events cannot occur simultaneously.
The calculator uses the probability formula:
Where:
Explanation: For mutually exclusive events, the probability of either event occurring is the sum of their individual probabilities.
Details: Calculating probabilities of mutually exclusive events is fundamental in statistics, risk assessment, decision making, and various scientific fields where event outcomes need to be quantified.
Tips: Enter probabilities for events A and B as values between 0 and 1. The calculator will compute the probability of either event occurring.
Q1: What are mutually exclusive events?
A: Mutually exclusive events are events that cannot occur at the same time. If one event happens, the other cannot.
Q2: What is the range of probability values?
A: Probability values range from 0 (impossible event) to 1 (certain event), inclusive.
Q3: Can the result exceed 1?
A: For mutually exclusive events, the sum of probabilities should not exceed 1. If inputs cause this, they may not be truly mutually exclusive.
Q4: How are probabilities typically expressed?
A: Probabilities can be expressed as decimals (0.0-1.0), percentages (0%-100%), or fractions.
Q5: What if events are not mutually exclusive?
A: For non-mutually exclusive events, the formula becomes P(A∪B) = P(A) + P(B) - P(A∩B) to avoid double-counting the intersection.