Question of the day

• If a field goal kicker hits 50% of his attempts and kicks 10 times during a game how many field goals do you predict he will make?

• Grab a workbook from front

• Write your name in it

Agenda

• Go over lesson 8

• Notes on prediction

• Lesson in workbook

• Exit ticket

Review from yesterday

• We can use one experimental probability to solve another experimental probability by writing a proportion

• We can use theoretical probability to predict experimental probability by writing a proportion

• =• If I roll a die 5 times and get a 3

twice how many times would you predict getting a 3 if you rolled it 15 times?

• If you flip a coin 40 times how many heads would you predict to land on?

Predicting with probability, with equations

Notes

remember

• Remember how to turn percent into fraction.

•40% = =

•32% = =

remember

•How to change percent into decimal

•Divide by 100

• 70% = .7

• 4% = .04

• 34% = .34

Using estimation for experimental probability

• If we know one experimental probability then we can use it to predict a probability in the future

• Try it with equations

• Tim finds his experimental probability of getting a hit is 40%. Out of 350 at-bats, how many times can he expect to get a hit?

• Write an equation

• What is 40% of 350?

• 40% = .4 and of means multiply

• 350 x .4 = 140

Same idea with proportions

• This time we can use the proportion idea we used yesterday

• Tim finds his experimental probability of getting a hit is 40%. Out of 350 at-bats, how many times can he expect to get a hit?

• 40% =

• =

Assignment

• Workbook p. 503

• Also workbook pages 499-501 have some good notes for this topic

Exit ticket

• Marty makes his field goals 74% of the time. Out of 150 attempts how many times can he be expected to make a field goal?