MATHS - STATISTICS

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Last updated 7:27 PM on 6/8/26
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5 Terms

1
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What is the formula for P(A∩B)P(A\cap B) given that A and B are independent

P(A∩B)P(A\cap B) = P(A)⋅P(B)P(A)\cdot P(B)

2
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What is the probability of P(A∩B)P(A\cap B) foe mutually exclusive events?

P(A∩B)P(A\cap B) = 0

  • Mutually exclusive events cannot occur at the same time

3
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What is the formula for P(A∪B)P(A\cup B) ?

P(A∪B)=P(A)+P(B)−P(A∩B)P(A\cup B)=P(A)+P(B)-P(A\cap B)

4
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When do you have to rearrange your calculation when finding a critical value?

  • WhenP(X≥C)P\left(X\ge C\right)

  • (“C” is the critical value)

5
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