Probability of drawing a 2 (as a percent)
19%
the probability of rolling a 2 (give answer as a fraction)
1/6
the ratio of the number of ways an event can occur to the total number of equally likely outcomes
Theoretical Probability
GIVEN FACT: "84% of smokers have tried to quit"
What is the probability that someone who smokes does not want to quit?
16%
Mr. Barker found the probability of drawing a spade to be 1/5 or 20%. Did he find the theoretical or experimental probability?
Experimental Probability
Given a 4 color spinner with equal parts (red, blue, yellow, green) what is the probability of spinning red?
1/4 or 25%
Probability of drawing the Queen of Hearts?
1/52
Probability of an even number or a 1
(give as a percent)
67%
Events that have no influence on each other
Independent
GIVEN: Table
More likely to be colorblind
Males
Probability of flipping heads twice in a row (as a fraction)
1/4
You have a bag of marbles, four red and five green. What is the probability of choosing red?
(4/9) or 44%
Probability of drawing a 2,3 or 4 (as a fraction)
3/13
Probability of rolling an 8 on a single die
0
The ratio of actual outcomes to the total number of possible outcomes in repeated trials
Experimental Probability
GIVEN: (Table)
More likely to live to the age of 100
Females
What is the theoretical probability of landing on green or blue?
1/2 or 50%
Given a 4 color spinner with equal parts (red, blue, yellow, green), the probability of spinning red then blue (as a fraction)
1/16
Probability of pulling any 4 OR a heart (as a fraction)
4/13
probability of rolling a 5, then a 2 (as a fraction)
1/36
The second event is influenced by the first event
Dependent
GIVEN: Table
The least probable of all the events
Female going to prison
What is the experimental probability of landing on green or blue?
3/8 or 38%
the theoretical probability of rolling a one THEN picking a red card out of a deck of cards
1/12 or 8%
1/6 * 1/2 (half of cards are red so 1/2)
the probability of flipping a coin to heads, then rolling a 3 on a die (as a fraction)
1/12
the probability of rolling a six then a number less than 3 (as a fraction)
1/18
what we expect to happen mathematically
Theoretical probability
Given: Table
Probability of a male being colorblind AND going to prison
1/9600
What is the theoretical probability of not landing on green?
3/4 or 75%
What is the theoretical probability of picking a purple marble?
2/11 or 18%
Probability of not an ace (as a percent)
92%
When rolling two dice, the probability that the sum is NOT 12. (as a fraction)
(Recall, there are 36 possible ways to roll 2 dice.)
35/36
After repeated trials the experimental probability should get _________ to the theoretical probability
closer
GIVEN: Table
Assuming there are 72 boys in the Upper School, how many would you expect would be colorblind?
about 6
What is the experimental probability of not landing on green?
17/20 or 85%
What is the probability of landing on a green, then pulling a red marble, then spinning not orange?
15/176 or 9%