- Check your grade in PowerSchool to see what's missing!
- You may have 0's for homeworks that you didn't show me if you were absent on certain days!
- Over our winter break we will have an assignment that challenges us to teach ourselves about the new unit, collecting data, specifically with experiment design
- Probability unit ends Friday!
- Any work that is not made up before break will be (permanently) entered as a 0 (unless there is some extenuating circumstance that you discuss with me before then)
- You can make up any outstanding quizzes after school Wednesday or Thursday, or come during any free period/lunch.
Tomorrow we start our last chapter of probability--Geometric and Binomial probability (chapter 17)! This is ultimately going to involve a lot of new graphing calculator stuff, so be sure to bring it tomorrow!
Tonight please complete the "Intro to Geometric and Binomial Probability!" worksheet provided in class (or below)!
- Answers are provided in () after each question--your job is to figure out the correct work!
- We don't really need to know anything new for the Geometric Probabilities in a-c...
- Just picture using "lines and words" and you got this!
- Then, try to jump to some exponential forms of these answers!
- For d, try to use some proportional reasoning!
- OR you can look up the formula for expected value for geometric probability (but that's less interesting)
- The binomial probability stuff is tougher...
- For any "exactly" question we have to consider the number of possible ways to arrange "x successes" in "n trials..."
- To determine this we can use a formula, or our graphing calculator...
- For example, on question f, if I want to find the probability that exactly 2 of 5 people speak a language other than English at home I need to consider how many different ways I could have 2 people "speak a language other than English at home" with 5 total people
- I could try to list out all the ways (there are 10)
- Or I can use my calculator:
- Enter the # trials (5)
- Press MATH-->PROB-->choose nCr
- Enter the "# of successes" (2)
- Press enter
- Or, read pages 390-391 and look at the formula on the bottom of page 391
- For "at least," "at most," or between questions we have a cumulative probabilities....these will be tougher, but we do know the skills needed to figure these out
- For an easier way to calculate binomial probabilities using our calculator check out the link below:
- Binomial Probability on the Graphing Calculator
- Or read the yellow box on page 393
The more you can figure out tonight the more prepared you'll be as we discuss all this stuff in class tomorrow! See you there!
And here's the homework in case you were out or lost yours:
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