4.1 probability intro.notebook - dvusd.org

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4.1 Probability Intro.notebook 1 October 05, 2016 Jul 88:25 PM 4.1 Probability Intro Objectives: TSW: 1. Identify possible outcomes. 2. Identify the complement of an event. 3. Use correct notation. 4. Describe events and sample space. Jul 88:25 PM Probability Definitions Outcomes The possible results of the experiment Sample space set of all possible outcomes Event Any such subset (part of a set) of the sample space Notation: P(E) Complement All outcomes that are NOT the event. Notation: P'(E) Jul 88:25 PM The probability of an event E is given by: P(E)= number of favorable outcomes total number of outcomes Jul 88:25 PM The sample space for the experiment of rolling a dice is: Ex: P(4)= Rolling a 4 is an event, what is the probability of this event? Jul 88:25 PM Flipping a Cup Flipping a Cup A cup is flipped 150 times. It lands on its side84 times, on its bottom 6 times, and on its top 10 times. a) P(top) b) P(side) c) P(bottom) Jul 88:25 PM You are given a bag that contains: 6 green, 4 blue, and 8 yellow marbles. a) What is the probability of drawing a yellow marble? P(Yellow) = b) What is the complement of drawing a yellow marble? P'(Yellow) =

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Page 1: 4.1 Probability Intro.notebook - dvusd.org

4.1 Probability Intro.notebook

1

October 05, 2016

Jul 8­8:25 PM

4.1 Probability IntroObjectives:TSW:  1.  Identify possible outcomes.            2.  Identify the complement of an event.            3.  Use correct notation.            4. Describe events and sample space.

Jul 8­8:25 PM

Probability DefinitionsOutcomes ­ The possible results of the experiment

Sample space ­ set of all possible outcomes

Event ­ Any such subset (part of a set) of the sample space             Notation: P(E)

Complement ­  All outcomes that are NOT the event.                            Notation: P'(E)

Jul 8­8:25 PM

The probability of an event E is given by:

P(E)= number of favorable outcomestotal number of outcomes

Jul 8­8:25 PM

The sample space for the experiment of rolling a dice is:

Ex:  P(4)=

Rolling a 4 is an event, what is the probability of this event?

Jul 8­8:25 PM

Flipping a CupFlipping a CupA cup is flipped 150 times. It lands on its side 84 times, on its bottom 6 times, and on its top 10 times. 

a) P(top)  

b) P(side)

c)  P(bottom)

Jul 8­8:25 PM

You are given a bag that contains: 6 green, 4 blue, and 8 yellow marbles.

 a)  What is the probability of drawing a yellow       marble?

     P(Yellow) =

b)  What is the complement of drawing a yellow       marble?

     P'(Yellow) = 

Page 2: 4.1 Probability Intro.notebook - dvusd.org

4.1 Probability Intro.notebook

2

October 05, 2016

Jul 8­8:25 PM

The table shows the number of ways to make each of the following poker hands.

Find:

a) P(Full House)

b) P(Straight)

c) P(One Pair)

d) P(Straight Flush with hearts         only)

Jul 8­8:25 PM

200 tickets were sold for a drawing to win a new television.  If Matt purchased 10 of the tickets, what are the odds in favor of Matt winning the television?

Odds in favor:   # of favorable outcomes                          # of unfavorable outcomes

Jul 8­8:25 PM

16,500 tickets were sold for a Phoenix Suns game.  If the Jones family purchased 2 seats to the game what are their odds against of winning the pizza?

Odds in favor:  # of unfavorable outcomes                          # of favorable outcomes

Jul 8­8:25 PM

The sample space of flipping a fair coin is: S = {H,T}

If you flip a coin 3 times the sample space will change... Create a tree diagram to show how.

1st Flip

2nd Flip

3rd Flip

H TSample Space:

Jul 8­8:25 PM

Given the sample space for flipping 3 coins...

a)  What is the probability of flipping      at least two tails?

    P(at least two tails)

b)  What is the probability of flipping at least 1 head?

    P(at least one head) 

Jul 8­8:25 PM

The sample space of spinning a spinner is S ={Blue, Green}. Create a tree diagram to show the sample space for 3 spins.

Sample Space: _________________________________

______________________________________________

Page 3: 4.1 Probability Intro.notebook - dvusd.org

4.1 Probability Intro.notebook

3

October 05, 2016

Jul 8­8:25 PM

What is the probability of:

a)   3 blues in a row

b)   At least one blue

c)   At least 2 greens

d)  Getting blue, green and then blue?

Jul 8­8:25 PM

Assignment

4.1 Worksheet