Outcomes
What are all the possible outcomes of rolling a die?
1, 2, 3, 4, 5, 6
Describe the likelihood:
30% chance it will rain tomorrow
unlikely
What is experimental probability?
probability based on the results of an experiment
How many possibilities?
pizza: thin, thick, stuffed
toppings: cheese, pepperoni, sausage
9
What type of events do not effect each other?
independent
What are the favorable outcomes of rolling a multiple of 10 on a die?
1, 2, 5
What does a probability of "1" mean?
certain- event will always happen
Experiment of landing on a die:
1: 5 times, 2: 3 times, 3: 1 time
4: 0 times, 5: 6 times, 6: 3 times
P(rolling a 5)
1/3
Draw the tree diagram:
coin: quarter, dime, nickel, penney
bill: $1, $5
show correct diagram with 8 possibilities
Independent or Dependent? Explain why.
At a restaurant you chose a dinner choice. Your friend then choses a dinner choice.
Independent; Your choice does not effect what your friend will pick.
Three girls and four boys made the spelling bee. How many ways can you choose a girl to be the first contestant?
3/7
+ + + - - + - + / / + /
P(not choosing +)
1/2
Experiment of landing on a die:
1: 5 times, 2: 3 times, 3: 1 time
4: 0 times, 5: 6 times, 6: 3 times
P(rolling a multiple of 6)
2/3
A true false test has 8 questions. How many different ways can the test be completed?
256
What is the probability of a coin landing on tails and the spinner below landing on yellow?
spinner: red, yellow, blue, yellow, black, purple
1/6
Find how many favorable outcomes of choosing a number divisible by 4 from the numbers 0-100.
26
spinner: blue, red, yellow, red, blue, red, red, purple, yellow, red, blue, red
What is the probability of choosing red or yellow?
2/3
It rained 3 out of 14 days in April. If this trend continues, how many rainy days should you expect in April?
6 days
Draw the tree diagram for the following:
bread: white, wheat, rye
meat: ham, turkey
cheese: american, provolone
show correct diagram with 12 possibitilies
A license plate has 4 digits. What is the probability of the first two digits being even numbers and the last two digits being a multiple of 2?
1/16
There are 12 cats and 7 dogs in a shelter. Suppose the first two animals adopted were dogs. What is the probability of the third animal being adopted is a cat?
12/17
The school football team has a 75% chance of winning a game. Suppose they are scheduled to play 16 games. How many are they predicted to lose?
4 games
You check 25 packages for damages. Suppose 3 of them are damaged. If you check 350 packages total, how many would you expect to not be damaged?
308 packages
A license plate has 2 letters and 4 digits. How many license plates combinations are possible?
6,760,000
You randomly draw two cards from a standard deck of 52 cards. What is the probability that both cards are diamonds?
1/17