AP Statistics
12/12/98
Coley / P. Myers / Wylder
Test #6 (Chapter 6)
Name ____________________________________
Multiple Choice (Questions #1-8) - Circle the answer of your choice.
1. Events A and B defined by the given Venn diagram are:
(a) independent and disjoint
(b) dependent and disjoint
(c) independent and not disjoint
(d) dependent and not disjoint
(e) cannot be determined
2. If performance on AP Statistics tests are independent and the probability of passing an AP Statistics test
is 0.2, then the probability of passing three AP Statistics tests is:
(a) 0.6
(b) 0.2
(c) 0.04
(d) 0.008
(e) 0
3. 45% of the WA upper school student body are male. 80% of the females love math, while only 60% of
the males love math. What percentage of the student body love math?
(a) 70% (b) 50% (c) 71% (d) 60% (e) 100% (obviously many students were lying)
4. If 3 coins are tossed, what is the number of equally likely outcomes?
(a) 3
(b) 4
(c) 6
(d) 8
(e) 9
5. If two fair dice are rolled, what is the probability of getting a sum > 4 ?
6. If P(X) = 0.23 and P(X and Y) = 0.12 and P(X or Y) = .34, find P(Y C).
(a) 0.23 (b) 0.52 (c) 0.11 (d) 0.77 (e) 0.48
7. If P(A) = 0.2 and P(B) = 0.3, find P(A or B) if:
(a) A and B are independent.
(b) A and B are disjoint.