Wednesday, Nov. 9, 2011

You will needMath book (pg. 210)whiteboard/marker/eraser Folder/notebookBell RingerA. List as many properties of parallelogram as you can.B. How are a parallelogram and square alike and different?C. Write the number 56,000,000 in scientific notation.

Thursday Nov. 10, 2011

• You will need:• Math book• Folder/notebook• Calculator • Bell Ringer• A. What is the probability of rolling an odd

number on a six sided dice?• B. What are the odds of rolling an odd number

on a six sided dice?

Friday Nov. 11, 2011• You will need:– Math book– Folder/Notes– Calculator

• Bell Ringer– A. Show the sample space for the probability of

flipping a coin three times. – What is the probability of tossing a at least two

heads?

Monday, Nov. 14, 2011

• You will need:– Math book– Folder/notebook

• Bell Ringer:– A. What is theoretical probability and

experimental probability? (pg. 211)– B. What is a baseball players batting average if

they hit 20 out of every 60 balls that are pitched at them?

Lesson 32

Probability

• Probability can be expressed in decimals or percents.

Probability

• The likelihood that a particular event will occur. – To represent the probability of event A we use the

notation P(A)

Range of Probability

• The Range of Probability is a ratio of favorable outcomes to possible outcomes. It is expressed as a number ranging from zero to one. – Remember that a ratio is a comparison of two

numbers by division. – Look on pg. 210

• P(Event)= number of favorable outcomes number of possible outcomes

Example 1

• The spinner show is spun once. What is the probability the spinner will stop– In sector A?– In sector A or B?– In sector A, B, C, or D?

Odds

• Is the ratio of the number of favorable to unfavorable outcomes. Expressed with a colon (:) – Favorable : Unfavorable

Examples

• What are the odds you will roll a 5 on a six sided dice?

• What are the odds you will flip a heads on a coin?

Compliment

• If we know the probability of an event, we can find the probability of its complement by subtracting the probability from 1.

Examples

• What is the compliment of a .25 probability?• What is the compliment probability of an even

that has a 50% chance of happening?

Sample Space

• Collection of possible outcomes• pg. 212-213

Example

• Nathan flips a coin three times. – Predict: which is more likely, that he will get heads

at least once or that he will not get heads at least once.

– Find the probability of getting heads at least once.– Find the probability of not getting heads at least

once.

Theoretical Probability

• Found by analyzing a situation– Coin tossing– Dice rolling

Experimental Probability

• Determined statistically– Baseball statistics– Free throw shots