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 136 people in the sample they contacted, that 70...

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 136 people in the sample they contacted, that 70 actually contributed money. Of those that contributed money, the average contribution was $832 with a standard deviation of $266. In the recent fundraising campaign, a sample of 93 people revealed that 53 have contributed money with an average contribution of $1,162 and a standard deviation of $322. When testing (at the 5% level of significance) whether theproportion of peole who are contributing has increased, what is the test statistic?