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Friday, December 9, 2016

Weekend (and Monday's) HW!

This weekend please complete the "Expected Value, Variance, and the Normal Model" problems provided in class (or below)!

  • For question 1 use the Normal model to find the probability a student scores under 65, or from 65 to 80, or between 80 and 90, or over 90--this is review! Use your chapter 6 notes or some (AP Stats Guy) videos about calculating percentiles under the Normal model!
  • Next, questions 2-4 get into our "new stuff"--creating a probability model and using it to find, then interpret, expected value!
  • On the back question 6 gets into some of the shifting/rescaling ideas we discussed...
  • And finally, for question 7 you have to consider what we learned today--the Pythagorean theorem of Statistics! Remember, VARIANCES ALWAYS ADD!

And if you're feeling like getting ahead, here's Monday night's homework--this is mostly based on "combining random variables" and the Normal model--the stuff we started to learn today in class (and will work with more on Monday)!

Page 383: 23, 27ab, 31bc, 33de, 37

We will have our chapter 16 vocab quiz on Tuesday! (You will get the chapter 15 quiz back on Monday). Here's the list of chapter 16 vocab to study:

  • Probability Model/Probability Distribution
  • Expected Value
  • Variance (standard deviation, squared)
  • Standard Deviation (informs us about how the outcomes of a prob. model fluctuate or vary)
  • Random Variable
  • Discrete Random Variable
  • Continuous Random Variable
  • Shifting
  • Rescaling
  • Pythagorean Theorem of Statistics (variances always add!)
  • Disjoint/Mutually Exclusive
  • Independent
  • Probability


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