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Material Type: Notes; Class: PRIN OF STATISTICS; Subject: STATISTICS; University: Iowa State University; Term: Unknown 1989;
Typology: Study notes
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899 329 285 710 2223
Lost 685 130 166 536 1517
Saved 214 199 119 174 706
Crew First SecondSteerage Total
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( ) Total ofoutcomes
ofoutcomesinEvent Event #
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–706/2223=0.318 or 31.8%
–1517/2223=0.682 or 68.2%
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P(A or B) = P(A) + P(B)
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General Multiplication Rule
P(A and B) = P(A)P(B|A) P(First Class and Saved) = P(First Class)P(Saved|First Class) = (329/2223)*0.605 = 0.09 or 9% P(First Class and Saved) = 199/2223 = 0.09 or 9%
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Two events are independent if the probability of the occurrence of one event does not effect nor is it affected by the occurrence of the other event. P(A) = P(A|B) = P(A|B C^ )
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–P(Saved) = 0. –P(Saved|First Class) = 0. –The two probabilities are not equal.
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–P(Red on 1 st^ and Red on 2 nd)= P(Red on 1 st^ )P(Red on 2 nd)
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–P(Red on 1 st^ and Red on 2 nd)= P(Red on 1 st)P(Red on 2 nd^ |Red on 1 st)
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1 st^ Trial 2 nd^ Trial Red Red White Blue Red White White Blue Red Blue White Blue
