1. 47% of the mice in a laboratory have a tumor. Among those without a tumor, 30% exhibit signs of a nervous condition. On the other hand, among those with a tumor, 65% exhibit signs of a nervous condition. A mouse is selected at random from this population. What is the prob- ability that it exhibits signs of a nervous condition? A) 0.6500 B) 0.1590 C) 0.4645 D) 0.2121 E) 0.3055