Vocabulary
A _________ is an arrangement, or listing, of objects in which order is important
What is a permutation
A pair of brown, black, or navy sandals are available in sizes 6, 7, 8, 9. what is the probability of choosing a size 7 in the navy?
1/12 or about 8% chance
P(9, 2)
72
The chance that something will occur
What is probability
The set of all possible outcomes in a probability experiment is the
What is a sample space
a spinner is divided into 8 equal sections numbered 1-8. what is the probability of spinning a 1.
1/8 or 12.5%
P(9, 4)
9 x 8 x 7 x 6 = 3024
How many different ways could you seat Enie, Meenie, and Mynie if you sat them in a row?
What is the method called to determine the outcomes?
3 x 2 x 1
6 different ways &
Permutations
If the outcome of one event does not affect the other event, the events are?
What is an independent event
50 bakery customers bought muffins and 11 of those customers bought banana muffins. If 100 customers buy muffins tomorrow, how many would you expect to buy a banana muffin
what is 22 people
a playlist contains 7 songs. what is the probability that the mp3 player will play the first 2 songs in order?
P(7,2) or 7 x 6 = 42
probability is 1/42
What is the term that is used for this probability/
1 - 0.83 = 0.17 or 17% chance of no rain
complementary probability
An experiment that is designed to model the action in a given situation
what is a simulation
Find the total number of outcomes when a number from 0 to 9 is randomly chosen, then a letter from A to D is randomly chosen
what is 40
25 people run in a race. what is the chance of coming in first, second, or third in the race?
25x24x23 = 13,800
There are 6 books to read on the shelf. Each night Xavier randomly selects one to read. How could you determine how many night it would take to read all of the books if the books were chosen randomly?
What is the vocabulary work?
Sample answer:
you could use a number cube and assign each book a number, roll it until you have rolled every number once.
Simulation
The ________________can be used to find the total number of possible outcomes by using multiplication
What is fundamental counting principle
A survey of Mrs. Giordano's 7th-grade class showed that 25 students will have pizza for lunch. 10 will have cheese, 6 will have pepperoni, and 9 will have a combination. There are 400 students in the school, based on these results how many students in the school can she expect to want a combination pizza?
9/25 = x/400
x=144 will choose combination
How many different 3-digit numbers can be formed using the digits 7, 8, 4, 2, 1, and 9. Assume no digit is used more than once.
5 different digits, 3 choices for placement so 5x4x3
= 60
How many outcomes are possible of choosing a letter from the word 'counting', rolling a dice, and spinning a spinner with 4 equal sections
This is called:
8 x 6 x 4 = 192 outcomes
Fundamental Counting Principle