Homework

Probability Day 11ProbabilityP(Event) = P(E)

Toss of coin:Probability of landing on heads:P(H) =

Probability of an event

ProbabilityP(will definitely occur) = 1ex: Have 1 dieP(never occur) = 0ex: Have 1 die= 1P(roll a #)P(roll a letter)= 0

Probability Warm-Up NotesA spinner is divided into tenths. The sections are numbered 1 to 10. If the spinner is spun, find the probability the number isa multiple of 44 or 8P(4 or 8) = between 0 and 301, 2, 3, 4, 5, 10 P(1, 2, , 10) = 12345678910

Probability Warm-Up NotesA spinner is divided into tenths. The sections are numbered 1 to 10. If the spinner is spun, find the probability the number is2P(2) = isnt on the spinnerP() = 12345678910

Probability Warm-Up NotesA bag contains 8 brown socks and 6 black socks. If two socks are randomly drawn, what is the probability that they will match?Total socks = 14Two cases:1. Two Brown: 2. Two Black:

only 7 brown & 13 total left nowonly 5 black & 13 total left nowORProbability Warm-Up NotesA die is rolled. Find the probability of each event.The number showing is less than 51, 2, 3, or 4

The number showing is between 2 and 6. 2 < 3, 4, 5 < 6

Probability Warm-Up NotesTwo dice are rolled and the numbers are noted. Find the probability of each event.The sum of the numbers is less than 5

When you are doing dice problems:1 die: 6 total outcomes (6)2 dice: 36 total outcomes (6 x 6)3 dice: 216 total outcomes (6 x 6 x 6)

Possibilities when 2 dice are rolled

Sum < 5 ?TOTAL = 36Probability Warm-Up NotesTwo dice are rolled and the numbers are noted. Find the probability of each event.The sum of the numbers is less than 5

The sum of the numbers is 4 or 5.

Possibilities when 2 dice are rolled

Sum = 4 or 5 ?Probability Warm-Up NotesTwo dice are rolled and the numbers are noted. Find the probability of each event.The sum of the numbers is less than 5

The sum of the numbers is 4 or 5.

P(4 or 5) =

Probability Warm-Up NotesThere are 12 tulip bulbs in a package. Nine will yield yellow tulips and three will yield red tulips. If two bulbs are selected at random, find the probability of each event.Both tulips will be red

One tulip will be yellow and the other redI: Y/R

II: R/Y

only 2 red & 11 total left now

12 total9 Yellow3 RedExtra ExampleDeck of cardsOne card is drawn at random from a deck. Find:

a) P(Queen)

b) P(King of Spades)

Homework#5 15-9 Probability WS(Dont need to do Mixed Review)&CST WEEK 7 Due!!!