Ducation Researchers are studying populations of two
squirrels, the eastern gray and the western gray.
For the eastern gray squirrel, about 39 percent
of the population weighs over 0.5 kilograms.
For the western gray squirrel, about 17 percent
of the population weighs over 05 kilograms. A
random sample of 110 squirrels will be selected
from the population of eastern gray squirrels,
and a random sample of 180 squirrels will be
selected from the population of western gray
squirrels. What is the mean and standard
deviation of the sampling distribution of the
difference in sample proportions (eastern minus
western)?