Ginger wants to fill her new swimming pool. she has two pumps; the larger pump takes 40 minutes to fill the pool, and the smaller one takes 60 minutes. how long will it take to fill the pool if both pumps are working?

Amayoral candidate would like to know her residents’ views on a tax on sugar drinks before the mayoral debates. she asks one thousand registered voters from both parties. these voters are an example of a census population convenience sample simple random sample