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  3. a wildlife biologist examines frogs for a genetic

A wildlife biologist examines frogs for a genetic trait that may possibly be linked to industrial...

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Statistics

A wildlife biologist examines frogs for a genetic trait that maypossibly be linked to industrial toxins in the environment. Thistrait is usually found in 1 of every 7 frogs, so the prevalence is0.143. A sample of 85 frogs are collected and examined. (Enter allprobabilities with 3 decimal points.)

The expected number of frogs in the sample with this trait is(enter with 2 decimal points) 12.15

What is the probability that this trait is in none of thesampled frogs? P(X=0) = 0.000

What is the probability that no more than 4 frogs in the samplehave this trait? P(X =< 4) = 0.004

What is the probability that 7 or 8 frogs in the sample havethis trait?

What is the probability that at least 7 frogs in the sample havethis trait?

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