Every day, katie looks for seashells on the beach. she has 282828 shells in her collection. katie finds 121212 more shells each day.

Rachel is studying the population of a particular bird species in a national park. 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. rachel's sample is . based on the sample she picked, rachel's generalization is