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Katarina [22]
3 years ago
7

A survey among American adults concluded that 20% of adults believe Elvis is still alive, 10% believe they've been abducted by a

liens, and 4% believe that both Elvis is still alive and they've been abducted by aliens. What is the probability that a randomly chosen adult believes that Elvis is still alive or they've been abducted by aliens.
Mathematics
1 answer:
Kitty [74]3 years ago
7 0

Answer:

P(Alive\ or\ Aliens) = 26\%

Step-by-step explanation:

Given

P(Alive) = 20\%

P(Aliens) = 10\%

P(Alive\ and\ Aliens) = 4\%

Required

Determine P(Alive\ or\ Aliens)

From laws of probabilities:

P(A\ or\ B) = P(A) + P(B) - P(A\ and\ B)

In this case:

P(Alive\ or\ Aliens) = P(Alive) + P(Aliens) - P(Alive\ and\ Aliens)

P(Alive\ or\ Aliens) = 20\% + 10\% - 4\%

P(Alive\ or\ Aliens) = 26\%

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