Multiplication Rule notes 2 Spring

# Multiplication Rule notes 2 Spring - 6 of 8 1.3 Summary...

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6 of 8 1.3 Summary Question 16 . At a large university, there are 32 males and 660 females in a statistics class, ﬁnd the probability of selecting 8 males without replacement. PROBABILITY OF “AT LEAST ONE” Probability of “At least one”. Definition 1.6 To ﬁnd the probability of “at least one” of something it is much easier to ﬁnd the probability of none , then: P (at least one) = 1 - P (none) (7) This works because Compliment of “At least one”. Definition 1.7 is none . In our statistics class we have 11 females and 7 males, ﬁnd the probability of randomly selecting 5 students with: Question 17 . At least one female with replacement. Question 18 . At least one female without replacement. 1.3 Summary Conditional probability P ( B | A ): pay attention and denominator! Independent trials: P ( B | A ) = P ( B ) Treat sampling without replacement as independent when: n N 0 . 05 Anthony Tanbakuchi MAT167

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Multiplication Rule 7 of 8 Multiple Trials prob. of A
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Multiplication Rule notes 2 Spring - 6 of 8 1.3 Summary...

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