question 1

In which of the following scenarios would a confidence interval for comparing two proportions be appropriate to construct? Select one: a. A randomly sampled 536 college seniors were asked which of several alcoholic drinks they would order when dining out. Fiftyeight percent said they would order beer, but only 38% said they would order wine. A researcher is interested in comparing the difference of preference between ordering beer and wine when dining out among all teens. b. A researcher is interested in comparing the cheating behavior between students who study natural science majors to those who study engineer majors. A randomly sampled 600 natural science students were asked if they have ever cheated on an exam, and 30% answered \"yes'.' A randomly sampled 500 engineer students were asked the same question, and 20% answered \"yes'.' 0. A researcher is interested in comparing the effect of a newly developed treatment to the standard treatment in reducing blood sugar. One thousand randomly selected patients having low blood sugar symptoms have been recruited. The patients were then randomly assigned either the standard treatment or the newly developed treatment. Among the 500 patients who took the standard treatment, 21% experienced significant increase in blood sugar. Among the 500 patients who took the newly developed treatment, 25% experienced significant increase in blood sugar. d. A researcher is interested in comparing the pet expenses between families who own a dog and those who own a cat. A random sample of 50 families who own a dog and a random sample of 60 families who own a cat were asked whether their monthly pet expense exceeds $300. Eighteen percent of families who own a dog answered \"yes" whereas fifteen percent of families who own a cat answered \"yes