Chen records the number of crayons in her art supply box by color. the results are shown in the table below. what is the ratio of the number of red crayons compared to the number of yellow crayons?

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