The number of years a bulldog lives is a random variable with mean 9 and standard deviation 3 , while for chihuahuas, the mean is 15 and the standard deviation is 4 . approximate the probability the that in a kennel of 100 bulldogs and 100 chihuahuas, the average chihuahua lives at least 7 years longer than the average bulldog.

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.