what is the null and alternative hypotheses?

A local church parish wants to raise money to add to their campus. In a sample from a previous fund raising campaign, the parish found that of the 120 people in the sample they contacted, that 85 actually contributed money. Of those that contributed money, the average contribution was $800 with a standard deviation of $250. In the recent fundraising campaign, a sample of 85 people revealed that 52 have contributed money with an average contribution of $950 and a standard deviation of $300. When testing (at the 5% level of significance) whether the proportion of peole who are contributing has increased, what is the null and alternative hypotheses?