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# AP+Statistics+Chapter+8+Section+1 - AP Statistics Chapter 8...

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AP Statistics Chapter 8 Section 1

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A gaggle of girls The Ferrell family have 3 children: Jennifer, Jessica, and Jaclyn. If we assume that a couple is equally likely to have a girl or a boy, then how unusual is it for a family to have 3 children who are all girls? If success = girl (of course) and failure = boy (sorry), then p(success) = .5 Define random variable X as the number of girls Simulate families with 3 children to determine the long-term relative frequency of a family with 3 girls, P(X=3)
1. Let even digits represent girls: 0,2,4,6,8 Let odd digits represent boys: 1,3,5,7,9 1. RandInt (0,9,3) If all three digits are even it represents a family with three girls. Any other combination of digits represents a family with a mixture of genders or all boys. Perform 40 simulations. Combine with classmates. Calculate the relative frequency of the event {3 girls}. 3 girls Not 3 girls

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X P(X) Determine the sample space for this simulation. What are the possible outcomes? X = number of girls bbg bgg bgb gbg bbb gbb ggb ggg 0 girls 1 girl 2 girls 3 girls
Vocab Binomial Setting Binomial random variable Binomial distribution – B(n,p)

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AP+Statistics+Chapter+8+Section+1 - AP Statistics Chapter 8...

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