(Answered) Frogs a wildlife biologist examines frogs for a genetic

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Frogs. A wildlife biologist examines frogs for a genetic trait he suspects may be linked to sensitivity to industrial toxins in the environment. Previous research had establishedthat this trait is usually found in 1 of every 8 frogs. He collects and examines a dozen frogs. If the frequency of the trait has not changed, what's the probability he finds the trait in

a) none of the 12 frogs?

b) at least 2 frogs?

c) 3 or 4 frogs?

d) no more than 4 frogs?

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