Sidney flew in an airplane five times during her vacation. the flights averaged 2 hours 28 minutes long. the lengths of her first four flights were 2 hours 10 minutes, 3 hours 20 minutes, 1 hour 15 minutes, and 2 hours 40 minutes. what was the length of her last flight?

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 . reset next