The Rule:
To find the probability of two independent* events "E" and "F", simply
multiply the probabilities of the two independent events:
P(E and F) = P(E) X P(F)
A bag contains 3 red
marbles, 4 blue marbles and 5 yellow marbles. In this
experiment you reach in the bag, select a marble, record it and
place it back into the bag. You then select a second marble.
What is the probability that you draw 2 blue marbles?
A. 8/24
B. 1/9
C. 16/24
D. 16/12
When you roll a pair of dice, what is the probability of rolling
"snake eyes"?
( a pair of 1's)
A. 1/6
B. 1/3
C. 1/9
D. 1/36
Suppose you flip a coin and spin a spinner which
is divided into 8 equal regions. Of the 8 equal regions, 3 are
red, 4 are black and the last region is green. What is the
probability of "tails" on the coin, and the spinner landing on red?
A. 2/4
B. 3/4
C. 3/16
D. 3/8
A coin is flipped a total of 9 times. If "heads" shows on the
first 8 tosses, what is the probability of getting a "heads" on the
9th toss?
A. 1/2
B. 1/9
C. 0
D. 1/512
The probability of Sara passing math is .85, and the probability of
her passing Latin is .62. What is the probability that Sara
will NOT pass either course?
