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8 master keys 1 master key to open several homes What is the probability that the real estate agent can get into a specific home if the agent selects 3 master keys at random before leaving?
Wiki User
∙ 11y ago
let L: room is locked k: he selects rite key to open a door then
p(L' and k) = p(L') +P(K)-P(L AND K) ALSO P(L') = 0.4 (GIVEN)
WHERE
P(K) = 0.375
S0,
p(L' and k) = 0.4 + 0.375 - (0.375 * 0.4)
= 0.625
Wiki User
∙ 11y ago
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