Ch 7 (probability) Formulas Flashcards Preview

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Flashcards in Ch 7 (probability) Formulas Deck (9)
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1
Q

Combination

A

nCr= n!
———
r!(n - r)!

2
Q

Theoretical probability

A

# outcomes in sample space

3
Q

Complement

A

P(not E)= 1 - P(E)

4
Q

Experimental probability

A
     # of trials
5
Q

Probability of independent events

A

P(A and B)= P(A) • P(B)

6
Q

Probability of dependent events

A

P(A and B)= P(A) • P(B|A)

7
Q

Mutually exclusive events (when A and B is occurring)

A

P (A u B)= P(A) + P(B)

8
Q

Inclusive events (when A or B is occurring)

A

P(A u B)= P(A) + P(B) - P(A∩B)

9
Q

Permutation

A

nPr= n!
——–
(N-r)!