- To "describe the sampling distribution" in part A you need to check the conditions and then define the shape, mean, and standard deviation.
- I would recommend sketching the Normal model and labeling the mean, then showing the standard deviation formula!
- For b, think: if we have 160 minutes for 40 songs, what is the average song length? So, to find the probability that we exceed the available airtime, that's the same as finding the probability that the average song length is over ____ minutes
- Multiple choice #14 has nothing to do with sampling distributions! This is some probability review!
- Here is a link to the AP Free Response answers/rubric: 2010 #2 Scoring Rubric and Answer Key
Tomorrow we'll get into some confidence intervals! I CAN'T WAIT! See you there!
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