**If you already did the textbook homework that was originally assigned for today you can do it for extra credit (due Friday)**
1.) For homework let's continue to work through the AP free response and AP multiple choice from class today....
- First, finish the 2 multiple choice, 2019 free response, and 2017 free response from class!
- The more time you put into figuring this stuff out, the better prepared you'll be! These are the types of questions we'll see on our unit test (and the AP exam)!
- Next, grade yourself! Use the info below to score each section as E, P, or I:
- 2019 Free Response:
- Part A:
- E: all 3 probabilities calculated correctly (with work shown for aii, aiii)
- P: 2 of 3 calculated correctly
- I: none or 1 of the 3 calculated correctly
- ai.) 0.0636
- aii.) 0.5864
- aiii.) 0.12
- Part B:
- E: states independent, writes in context, supports using probabilities from the table
- b.) Yes, the events of being a person whose response is never and being a woman ARE independent because P(N/W) = 0.12 = P(N) = 0.12.
- Here are some other mathematical approaches:
- Part C:
- E: calculates correct probability of 4 or 5 will always take medicine
- P: calculates probability of 5 taking medicine correctly, but fails to multiply by number of arrangements (5) for 4 people taking medicine
- c.) 0.24149
- Here's a link to the full scoring rubric:
- 2017 Free Response:
- Part A:
- E: must satisfy the following 3 components:
- indicates normality and parameters (mean, st. dev)
- This can be done by labeling mu, sigma, and normalcdf, or by showing a sketch that identifies the mean in the middle and labels at least 1 st. dev. above or below (128 or 138)
- indicates boundary/direction
- This can be done by labeling "lower, upper" in a normalcdf calculation and/or by labeling the lower bound and shading the correct direction in a sketch
- calculates correct probability = 0.2119
- Part B:
- E: correct probability calculated AND supporting work is shown
- If tree diagram is used, show it, multiplication across branches is implied
- MUST show addition of values from tree
- P: correct answer, insufficient work (ie doesn't show the addition)
- P: switches probabilities for J, K in tree diagram but all other work is correct
- Answer = 0.4007
- Part C:
- E: correct probability calculated AND supporting work for conditional probability shown
- Answer = 0.3707
- Here's a link to the full scoring rubric:
- 2 AP MC:
- 1.) B
- *Note: look at the quesiton--this is a conditional probabliity!
- 2.) D
2,) Chapter 15 Vocab Quiz Tomorrow!
- Much of the vocab on tomorrow's quiz repeats from our last (ch. 14) quiz, so use that to study!
- Equally likely events
- Disjoint/Mutually Exclusive
- Complement
- Sample Space
- Probability
- Law of Large Numbers
- Union
- Intersection
- Independent Events
- New (ch. 15) vocab)
- Conditional Probability
- Venn Diagram (when do we use it?)
- Tree Diagram (when do we use it?)
- Given 5 questions determine which do/do not require the use of conditional probability
- With replacement vs. without replacement
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