Probability Tables (VCE SSCE Mathematical Methods): Quizzes

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Probability Tables
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What does a probability table provide for probability problems?

A tabular method for representation

How many distinct regions are created when two sets AA and BB intersect?

Four non-overlapping regions

What do the main cells of a probability table contain?

Joint probabilities

What do marginal probabilities in a probability table represent?

Probability of a single event

What are probability tables sometimes called in mathematical contexts?

Karnaugh maps

What do both row totals and column totals sum to in a probability table?

1

What does Pr⁡(A∩B)+Pr⁡(A∩B′)\Pr(A \cap B) + \Pr(A \cap B') equal?

Pr⁡(A)\Pr(A)

Why can A∩BA \cap B and A∩B′A \cap B' have their probabilities added directly?

They are mutually exclusive

If Pr⁡(A)=0.7\Pr(A) = 0.7, Pr⁡(B)=0.6\Pr(B) = 0.6, and Pr⁡(A∩B)=0.4\Pr(A \cap B) = 0.4, what is Pr⁡(A∪B)\Pr(A \cup B)?

0.90.9

Which four regions do two intersecting sets AA and BB create?

A∩BA \cap B, A∩B′A \cap B', A′∩BA' \cap B, A′∩B′A' \cap B'

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