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junior college 2 | H2 Maths
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Please help, the answer for b is 0.31
Date Posted: 7 months ago
Views: 133
a) P(9 patients are cured) + P(10 patients are cured) = 10C9 (0.92)^9 (0.08) + (0.92)^10
b) P(11 hospitals have success rate of at least 90%) + P(12 hospitals have success rate of at least 90%)
= 12C11 (ans from (a))^(11) (1 - ans from (a)) + (ans from (a))^(12)
b) P(11 hospitals have success rate of at least 90%) + P(12 hospitals have success rate of at least 90%)
= 12C11 (ans from (a))^(11) (1 - ans from (a)) + (ans from (a))^(12)
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