1. a) .88 b) 1-.88 c) .34

2. (5 choose 2)/ (10 choose 3)

3. a) median=45, b) sample average=51.89, c) distribution appears right-skewed,
since average > median, d) average of new values = (3* average of old values)
+1; s_new=3*s_old

4. a) (.04)**3 b) 1-(.04)**3

5. There are 12 outcomes. S={ DD, DNDD, NDD, NNDD, NDND, DNND, DNDN,
NNND, DNNN, NDNN, NNDN, NNNN}

6. a) .48 b) .04/.52