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Concept explainers
To explain why the sum of probabilities in a probability distribution should always be 1. And to include an example.
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Answer to Problem 16HP
Probability of an event
And the sum of probabilities in a probability distribution should always be 1.
Explanation of Solution
Probability of an event
Hence, the sum of probabilities in a probability distribution should always be 1.
Consider an example of coin flip experiment.
Probability of landing head is
Probability of landing tails is
And the sum the sum of probability is 1.
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Algebra 1
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