Trisha is picking out a new lamp at a furniture store. There are 2 kinds of lamp bases and 2 different lampshades. Each lampshade comes in 2 different colors. Trisha also needs to choose one of the 8 kinds of lightbulbs available. How many different lamps can Trisha choose?

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