10.62 In a controlled laboratory experiment, scien- tists at the University of Minnesota discovered that 25% of a certain strain of rats subjected to a 20% coffee bean diet and then force-fed a powerful cancer-causing chemical later developed cancerous tumors. Would we have reason to believe that the proportion of rats devel- oping tumors when subjected to this diet has increased if the experiment were repeated and 16 of 48 rats de- veloped tumors? Use a 0.05 level of significance