Official 2020 AP Stats Exam College Board Lesson #11 Probability 4_20_2020

Hi All!



That was a nice lesson from Brendan Murphy!  Here are my take-aways and teacher comments:



Brief Reminders:

• Lessons are here: https://www.youtube.com/watch?v=dv2NuuOK0Lc&list=PLoGgviqq4845u-QDW3bikMhC4uQsuYDpy&index=19

• Lessons: April 6-10: Units 6-7 taught first because many schools either didn’t get to these entirely or at all (we did get through most of this); April 13-May 1: Units 1-5
• AP Stats Exam Friday May 22 from 2-2:45 EST
• All resources available at Statsmedic.com/youtube
• If you need a device take the Exam go to cb.org/tech

Last night’s homework:

• Nice multiple choice conditional probability from a two way table as a warm up

Example #1--2007 AP Exam MC #6:

• Nice independent events explanation

Example #2—2007 AP Exam MC question:

• Nice way to highlight that Mutually Exclusive Events Are Not Independent

Example #3-- 2012 AP Exam #16

• Highlights that add means multiply in probability

Example #4 “Airlines” – 2002 AP Exam FRQ #2

• Nice reminder that in a probability distribution table that the probabilities must add to equal 1
• a):  Reminder that or means add and add CONTEXT
• b):  nice review of expected value (E(x)) and two ways to solve the question
• c): nice example of how to get a conditional probability off of a probability distribution table

Example #5 2003 AP FORM B Exam FRQ #2

• a):  Highlights the need to add CONTEXT and/or show work for support
• b):  Again, highlights the need to add CONTEXT and/or show work for support
• c): nice roll coin/die flip  explanation to demonstrate the independent events formula

Example #6 2010 AP FORM B Exam FRQ #5

• a):  Don’t include values in common twice.  Either don’t add the extra to begin with or subtract it.
• b):  Again, nice example of how to get a conditional probability off of a probability distribution table
• c): Another review of the independent events formula/test

If you can, do the MC homework from the 1997 AP Test (or watch the recoding at you leisure) and follow along as we learn.



As always please email me with questions, comments, thoughts.



Take care!