For each of the following pairs of goods or services, identify the one for which price elasticity of demand is greater and explain why. Make sure to distinguish between the terms 'Need' and 'Want' when evaluating the choices below. - Coffee/ Starbucks Coffee - Tuition at a public university/ tuition at a private university - Emergency room medical service/ annual physical exam - Movies in the afternoon/ movies at night - Prescription medicine/ over-the-counter medicine