4. A wildlife biologist examines frogs for a genetic trait he suspects may be linked to sensitivity to industrial toxins in the environment. Previous research had established that this trait is usually found in 1 of every 8 frogs. He collects and examines 16 frogs. What is the probability that he finds the trait in ____. A)...None of the frogs? (Round to 3 decimal places) B)...At least 1 frog? (Round to 3 decimal places) C)Find the mean or expected number of frogs with the trait. D)Find the standard deviation of the number of frogs with the trait. (Round to 3 decimal places)