Evaluate the expression. 1 2 + 1 4 ÷ 2 3 write your answer as a fraction or as a whole or mixed number. submit not quite—we'll make sure to work on that later. questions answered

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