Do
You
Know
Your
Probabilities?
100
What is a probability?
The chances of an event occurring.
100
What is an event in probability?
If the occurrence of something happening.
100
In a standard deck of 52 cards, what's the chance of drawing a King of hearts?
1/52
100
A spinner is divided into 8 equal sections. 2 of them are bronze, 1 of them is silver, and 5 of them are gold.
What is the probability that it lands on platinum?
0
100
You roll a six sided die, what is the probability you roll a number that is less than a four?
3/6
200
In a standard 52-card deck of cards, what is the probability of drawing a club on your first draw?
13/52 or 1/4
200
What is the probability that you roll a 1 or 3 on a die?
2/6 or 1/3
200
Andre flips one fair coin and then flips another fair coin.
What is the probability that he gets heads on both coins?
.25 or 1/4 or 25%
200
If a die is thrown what is the probability that it will land with a 4 or a 6 facing up?
2/3
200
An event with a probability of 1 means what?
An event with the probability of 1 means that it will happen.
300
What is a sample space?
A list of all the possible outcomes of a chance experiment.
300
What is the probability that you choose "C" from the word CAT and flip a heads on a coin?
1/6
300
A card is drawn at random from a well-shuffled pack of cards numbered 1 to 12. Find the probability of getting a number divisible by 3.
4/12 or 1/3
300
Kiran flips a fair coin. If it lands on heads, Kiran will toss the coin again. If it lands on tails, Kiran will roll a standard number cube. What is the probability that Kiran gets heads on his second toss under the condition that he got heads on his first toss?
0.5 or 1/2 or 50%
300
All probabilities are numbers between ____ and _____
0 and 1
400
What is an outcome?
A possible result of a chance experiment.
400
How many outcomes are there by spinning a spinner labeled A,B,C, and D, and then rolling a standard 6-sided number cube?
24 possible outcomes
400
One of these games is selected at random. What is the probability that players were warmed up and missed more shots made than they made?
.11 or 11% or 6/52
400
A fair coin is tossed 4 times.
Each time it lands heads up.
What is the probability for this to happen?
1/8
400
Students in a psychology class are identified as either introverts or extroverts using a personality quiz. They are then asked how many close friends they have. The results are summarized in the table.
What is P(introvert | 5 or more close friends) ?
3/24 or .125 or 12.5%
500
Han randomly selects a card from a standard deck of cards. He places it on his desk and then Jada randomly selects a card from the remaining cards in the same deck.
What is the probability that Han selects a card that has diamonds on it and that Jada selects a card that has diamonds on it?
.059 or 5.9%
500
The two-way table shows the number of eggs laid by 10 Rhode Island red chickens and 10 leghorn chickens in July and August.
What is the probability that the eggs were laid in August and were leghorn chickens?
.24 or 24% or 241/979
500
What is P(warmed up | more shots made)?
14/31 or .45 or 45%
500
The two-way table summarizes whether or not a cross country team had practice when it was raining and when it was not raining at the end of the school day.
What is P(not raining OR cross country practice)?
19/21 or .90 or 90%
500
Diego randomly selects a card from a standard deck of cards. He places it on his desk and then Clare randomly selects a card from the remaining cards in the same deck.
Are the events of Diego and Clare randomly selecting a card dependent or independent? Explain your reasoning.
Dependent. Explanations vary.