Brianna and Maya get on a roller coaster together and pick seats. Maya picks a seat after Brianna does.
Are these two events Dependent or Independent ?
Dependent Events
You flip a coin twice.
What is the probability of getting heads and then getting heads?
Write your answer as a decimal.
(1/2) * (1/2) = 1/4 = 0.25
A bag of marbles has 2 pink, 2 purple and 1 orange in it.
Diane picks one marble, without putting it back, selects a second. What is the probability she picks a pink then an orange?
Answer with a simplified fraction.
(2/5) * (1/4) = (2/20) =1/10
A box contains 5 purple markers, 2 red markers , 2 yellow markers and 6 blue markers. What is the probability that you select something other than a red marker? Round to the nearest whole percentage.
13/15 = 87%
What is sample space?
The list of all possible outcomes
Cameron spins a spinner 5 times.
Are the 5 events independent or dependent?
Independent
You roll a 6-sided die two times.
What is the probability of rolling an even number and then rolling an odd number?
Simplify your answer and write it as a fraction or whole number.
(3/6) * (3/6) = (9/36) = 1/4
You pick a card at random. Without putting the first card back, you pick a second card at random.
The cards are labeled : 2 , 3 , 4
What is the probability of picking an odd number and then picking an odd number?
Write your percentage as a whole number.
(1/3) * (0/2) = 0%
From a standard deck of 52 cards, what is the probability of NOT selecting a red card?
1/2 the deck ... 50%
How many days (including weekend) do we we have off for winter break?
10 days
At a fundraising event, Laura is drawing raffle tickets to determine winners. Laura has already drawn a ticket for the first prize, and will next draw a name for the second prize.
Are these two events dependent or independent?
Dependent Events
You spin the spinner twice.
The spinner has four equal parts labeled :
6 , 7 , 8 ,9
What is the probability of landing on an even number and then landing on an 8?
Write your answer as a percentage rounded to the nearest whole number.
(2/4) * (1/4) = (2/16) = 13%
On a bookcase, there are 5 Mysteries, 3 Documentaries, and 8 Fiction books in the library. Tim wants to check 2 books out.
What is the probability that Tim checks out a documentary and then a fiction book?
(3/16) * (8/15) = (24/240) = 10%
You roll a die numbered 1 -12. What is the probability that the number is NOT a factor of 12?
6/12=1/2 = 50%
Don't want to include 1, 2, 3, 4, 6, 12
Why do we answer probability with percentages ?
Everything is out of a 100% chance happening.
Students in a classroom are voting for class president by secret ballot. Dylan submits a ballot, and then Baldwin submits their ballot.
Are these two events dependent or independent?
Independent Events
You pick a card at random, put it back, and then pick another card at random.
The cards are labeled : 5 , 6 , 7 , 8
What is the probability of picking a 6 and then picking a number greater than 6?
Write your answer as a percentage WITHOUT rounding.
(1/4) * (2/4) = (2/16) = 12.5%
A gumball machine is filled with 40 red gumballs, 33 blue gumballs, 29 yellow gumballs and 68 white gumballs.
Donald purchases a gumball first and then Russell picks a gumball second. What is the probability that Donald and Russell both purchase a blue gumball .
Round nearest whole number (%)
(33/170) * (32/169) = 1056/28730 = 4%
Of the standard deck of 52 cards, what is the probability of NOT selecting a card numbered 5 - 10.
5 - 4 Cards
6 - 4 Cards
7 - 4 Cards
8 - 4 Cards
9 - 4 Cards
10 - 4 Cards
= 24 cards that you DON'T want
52-24 = 28
28/52 = 54%
What days does the math center run after school & what teachers run each day ?
Mrs. Patalano on Thursdays
Guests are filling out RSVP cards for Justine's wedding. They must choose which type of entree they would prefer for dinner. The choices are chicken, beef, or vegetarian dinners. Manny chooses an entree; on the other side of town, Lacey also chooses.
Are these two events dependent or independent?
Independent Events
Sarah has a box of the following marbles :
5 Blue , 8 Red, 2 Yellow, 1 Orange and 4 Pink.
What is the probability that she selects an orange marbles, puts it back, and then selects a red marble.
Round your percentage to the nearest whole number.
(1/20) * (8/20) = (8/400) = 2%
A third grade teacher is assigning parts for the class play. There are 15 students in the class.
Find the probability that Bobby's role will be selected first, and Jack's role will be assigned second.
Round your answer to the nearest tenths (%) .
(1/15) * (1/14) = (1/210) = 0.5%
Out of the 12 months of the year, what is the probability of selecting a month that does NOT contain either Halloween, Valentines Day, Christmas , Thanksgiving or Easter?
7/12 = 58%
When is my Due Date?
month , date , year
January 14th, 2024