**Any/all outstanding linear regression tests (vocab last Weds., math last Thurs.) must be made up during lunch/study hall tomorrow!**
Monday HW:
Pages 340-343: 13, 19ab, 27, 29
- Throughout the homework you will see a few "at least one problems..."
- Remember, "at least one" means "one or more..."
- In other words, "at least one" means "everything except 0..."
- So, our best option mathematically is to consider this:
- At least one = not 0
- So, we'll find the probability that 0 "whatever's" occur, and subtract that from 1!
- For example:
- What is the probability that we spin a roulette wheel 5 times and at least one spin lands on a green section (0 or 00)?
- "At least one green" is the same thing as "not 0 greens"
- So, we find the probability of 0 greens: "not green and not green and not green and not green and not green."
- = (36/38) x (36/38) x (36/38) x (36/38) x (36/38)
- Then, we take the answer from the bullet above, and subtract it from 1!
Today's Class Recap:
- Stamp = Grade HW (key sent out via Remind)
- Discussed HW Q's #5, 12d
- Finished notes examples from Friday: 2 spinner questions, roulette slides #2, #5
- Added three new types of problems (more math) = notes
- 6.) If we spin 4 times, what is the probability that all four are not red?
- 7.) If we spin 4 times, what is the probability that the four spins are not all red?
- 8.) If we spin 4 times, what is the probability that at least one spin lands on red?3
- All of this type of math shows up in tonight's homework, so get the notes from a classmate (and read above)!
Tomorrow in class we'll look at/discuss any homework questions, we'll go back to that "at least one" example and do some more math, and then we'll start to look at lots of vocab with probability!
See you there!
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