2x2x2x2x2x2x2x2x2x21024 b

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Unformatted text preview: . 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 1024 b. Getting all questions correctly answered. c. P(at least one question wrong ) = 1 ‐ P(all questions correct) = 1 – 1/1024 = 0.999 a. b. c. d. The outcomes (numbers of girls) are not equally likely. It is more likely to have 1, 2 or 3 girls than to have 0 or 4 girls. 2 (i) 84/795 (ii) 504/795 69/795 = 0.0868 If independent: it is (i) x (ii) = (84/795)(504/795) = 0.0670 (i) (69+15+435)/795 = 519/795 = 173/265 = 0.6528 (ii) (84+504‐69) /795 = 519/795 = 173/265 = 0.6528 ST1131 Introduc...
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This document was uploaded on 03/13/2014.

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