According to the Census Bureau, 13% of American adults ( aged 18 and over) are Hispanic. An opinion poll plans to contact an SRS of 1200 adults. a. What is the mean number of Hispanics in such samples? What is the standard deviation? b. Should we be suspicious if the sample selected for the opinion poll contains 15% Hispanic people? Compute an appropriate probability to support you answer.

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.

Prove that 16^4-2^13-4^5 is divisible by 11.