Rachel is studying the population of a particular bird species in a national patk. She observes every 10th bird of that species that she can find in the park. Her conclusion is that the birds living in

Rachel is studying the population of a particular bird species in a national patk. She observes every 10th bird of that species that she can find in the park. Her conclusion is that the birds living in the park who belong to that species generally feed on insects.

Is rachels sample biased or not biased? Is her generalization valid or not valid?

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Rachel is studying the population of a particular bird species in a national patk. She observes every 10th bird of that species that she can find in the park. Her conclusion is …

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