Atraveler is walking on a moving walkway in an airport the traveler must walk back on the walkway to get a bag he forgot the travelers ground speed is 2ft/s against the walkway and 6ft/s with the walkway what is the travellers speed off the walkway what is the speed of the moving walkway

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