Economics 1st Edition by Dean Karlan,Jonathan Morduch

تمرين 9

Books for Kids is a not-for-profit organization that runs after-school reading programs in four school districts. Books for Kids is planning a fundraiser to buy new books. Last time it held a fundraiser, donors were allowed to specify which district program they wanted to receive their donation. Table 11P-2 shows the average donations and the

percent of all donations that went to each district. Using the last fundraiser as a projection, what is the expected value of the average donation across all four programs?