In a memory test, the test subjects are shown 625 objects and are asked after two hours to name the objects. The historical records show that test subjects remember 80% of the objects after two hours. Answer the following. (If necessary, consult a list of formulas.) OO (a) Find the mean of p, where p is the proportion of objects that are remembered by a test subject. X 15 D (b) Find the standard deviation of p. (c) Compute an approximation for P (p