Define/Describe Theoretical Probability
The chance of an event happening based on all possible outcomes. Answers what SHOULD happen.
Define/Describe Experimental Probability
The ratio of the number of times an event occurs to the total number of trials. Answers what ACTUALLY happens.
Probability is the chance of an event happening and is expressed as a number between ______ and ______
0 and 1
Define Complement in regard to probability
The probability of an event NOT happening
What is the difference between my theoretical and experimental probabilities?
E: 1/2
T: 1/4
1/4
There are 3 hearts, 2 diamonds, 1 triangle, and 2 circles on a spinner. What is the theoretical probability of you landing on a diamond?
2/8 or 1/4
True or False
Experimentally, if I were to flip a coin 100 times, I would always land on heads 50 times and tails 50 times
False
What is the likelihood of the following event?
Rain on a day where clouds are dark gray and above head.
Likely
Billy Bob Joe has a 1/3 probability of grabbing a chocolate chip cookie out of his cookie jar. What is the complement of grabbing a chocolate chip cookie?
2/3
What is Mr. Hardin's first name?
Joey
If you were to flip a coin 38 times, how many times would you expect heads? How many times would you expect tails?
19 heads and 19 tails
Mrs. Radcliffe's experimental probability for landing on hearts the other day with her spinner was 1/4. If she spun the wheel 16 times, how many times did she land on hearts?
4 times
What is the likelihood of the following event?
Rolling a dice and landing on a number greater than or equal to 4
equally likely
I stopped at the bowling alley and asked the desk worker to grab me a bowling ball. Every 4 out of 9 bowling balls are green. What is the compliment of him grabbing a green bowling ball?
5/9
When I write these questions below, which one is asking for the probability of flipping a heads and which one is asking for the compliment of flipping a heads?
1. P(Heads')
2. P(Heads)
1. Complement
2. Probability
If I had a theoretical probability of landing on a diamond every 4/9 spins on my spinner, how many diamonds would I expect to land on if I spun my spinner 27 times?
12
A spinner labeled with equal sections 1-5 was spun. Results are shown. What is the experimental probability of landing on a 4?
1/5
State the likelihood of the following event:
passing a class if you turn in none of your assignments
Unlikely
A gumball machine contains equal numbers of red, yellow, green, and blue gumballs. It randomly gives out one for each pull at the machine. What is the complement of getting a red gumball from one pull at the machine?
3/4
Mr. Hardin wants to know the likelihood (in words) his chances of getting a number 2-4 if these cards were flipped over. What is the theoretical probability?
likely
3/5
You have 3 red coins, 2 blue coins, and 5 orange coins in a bag. If you keep drawing coins blindly and replace them after each pick, theoretically how many orange coins should you pick after doing this 40 times?
20 orange coins
12/20 or 3/5
State whether the following numbers would be impossible, unlikely, equally likely, likely, certain, or not a value of probability on the probability scale:
0 .49 2 .75 .5
0 - impossible
.49 - unlikely
2- Not a value of probability
.75 - Likely
.5 - equally likely
On a spinner, there are 3 hearts, 2 diamonds, 1 triangle, and 2 circles. What is the compliment of landing on a triangle?
8/9
If Billy has five cards below and he flips them over, what is his probability of drawing a prime number? State your answer in a fraction, percent, and decimal.
2, 3, and 5 are prime numbers
3/5 60% .60