a) 20 households are randomly selected from the town; 8 own a dog
why: when conducting a survey to determine approximations in a population, it’s best to eliminate any and all biases for best results. Households who live near a park or have their own front yards will skew results as the rest of the population may not have access to those things, thus are more likely to not have a dog.
b) 8/20= 0.40
600*0.40= 240