Probability and Expected Value Review ANSWERS 1. D

Probability and Expected Value Review ANSWERS
1.
2.
3.
4.
5.
6.
7.
D
C
D
C
E
B
D
8. a) 𝜇𝑥 = 40(. 26) = 10.4 𝑎𝑟𝑡ℎ𝑟𝑖𝑡𝑖𝑠 𝑠𝑢𝑓𝑓𝑒𝑟𝑒𝑟𝑠
b) P(x = 10) = .143
c) P(x > 10) = 1- P(x ≤ 10) = .474
𝜎𝑥 = √40(. 26). 74) = 2.77 𝑎𝑟𝑡ℎ. 𝑠𝑢𝑓𝑓.
9. Assign digits (for example 00-24 B wins (product odd) and 25-99 A wins (product even)
Start on line one reading one digit at a time from left to right
Stop when one player has five points
Count number of wins for Player A and use per your simulation P(# A wins/total games)
10. C – even though it does not directly say the rocket and engine are “independent”, the information
of “purchased separately” and “randomly selected” leads to the independence. However, on the AP
test I think it will use the word independent.
If not stated as independent, E would be the correct answer.