Definitions
The likelihood of an event happening
Probability / Chance
You flip a coin 10 times and the results are: H, H, T, T, T, H, H, T, H, T, H.
Experimental Probability
A probability can be written as a decimal or fraction but not as a percentage because percentages are bigger than 1.
False
Event A {1, 3, 5, 7, 9}
Event B {2, 4, 6, 8, 10}
List the set for A U B =?
A U B = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
21/24 simplified is...
7/8
A single undertaking of an experiment
Trial
A spinner is equally divided into quarters. Each quarter is labelled either Red, Blue, Yellow or Green. The probability of landing on red is 25%.
Theoretical Probability
If you flip a coin twice, you are likely to land on heads.
False. There is an even chance.
Event A {2, 4, 6, 8, 10, 12}
Event B {3, 6, 9, 12, 15, 18}
List the set for A ∩ B
A ∩ B = 6, 12
24 x 6 =
144
A list of outcomes from an experiment
Sample space
Pr(Event) = number of favourable outcomes / total number of trials
Experimental Probability
True. Each side has a 1/6 chance of being rolled.
Event A {14, 20, 22, 25, 30}
Event B {9, 10, 14, 23, 29}
Are events A and B mutually exclusive? Explain why/ why not?
They are not mutually exclusive because they both share the number 14 in common.
64/96 simplified is...
2/3
The possible result of an experiment
Outcome
Pr(Event) = number of favourable outcomes/ total number of outcomes
Theoretical Probability
If you flip a coin and get heads, the next time you flip it, you are more likely to get a tails.
False.
From a group of 25 students, 15 enjoy art (A), 12 enjoy music (M) and 10 enjoy both art and music.
What is the probability of randomly selecting a student that only likes art?
Pr(A only) = 5/25 = 1/5
The highest common factor for 24 and 36
12
Event
Jack rolls a die 6 times. His results are 1, 2, 3, 4, 5, 6. The probability that he rolled 2 was 1/6.
Experimental Probability
If a random letter were to be picked from the word "TEACHER". You are more likely to pick a consonant than a vowel.
True. Pr(Consonant) = 4/7 and Pr(Vowel) = 3/7
From a group of 24 students, 14 play violin (V) and 8 play piano (P) and 3 students play both violin and piano.
What is the probability of randomly selecting a student who doesn't play violin or piano?
Pr(Not Violin or Piano) = 5/24
The percentage and decimal for the fraction 12/20 is...
60% and 0.6