3. There are 15 yellow and 35 or- ange balls in a basket. How many
more yellow balls must be added to
make yellow balls 65%?
a. 35
b. 50
c. 65
d. 70

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