Fifteen sprinters ran the 50-yard dash in an average of 9.5 seconds. of those runners,3 ran the dash in 11.5 seconds. find the average time of the other 12 boys

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