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Wednesday, February 15, 2017

When's Day HW!

2 more days of sampling distributions! Then we get to the realllll good stuff--confidence intervals next week!

Don't forget--your AP $ and form are due March 1st! 



Tonight please complete the following in your textbook:

Page 428:
  • 7a (find the standard deviation for the sampling distribution for proportions, label 3 standard deviations above/below p--check the example on page 415-416)
  • 11 (you already checked these conditions, so skip those; tonight, create the model with the 68/95/99.7 rule shown AND INTERPRET this rule in complete sentences--like we did today)
  • 23 (you already checked these conditions as well; label AND interpret the 68/95/99.7 rule like we did in class!)
  • 25cd (for 25d you will first create the sampling distribution model, then we have to do some Normal model math using this new sampling distribution standard deviation!)
And don't forget--we will have a chapter 18 vocab quiz on Friday! Here's the vocab list:
  • 10% Condition (know what it is why we check it)
  • Randomization Condition (know what it is why we check it)
  • Success/Failure Condition (know what it is why we check it)
  • Large Enough Sample Condition (know what it is why we check it)
  • 3 conditions for a sampling distribution for proportions
  • 3 conditions for a sampling distribution for means
  • Sampling Variability (aka sampling error)
  • Sampling Distribution
  • Sampling distribution for proportions = categorical data
  • Sampling distribution for means = quantitative data
  • Central Limit Theorem
  • Standard Error
  • Know how increasing/decreasing sample size affects standard error
  • Identify which question requires the use of a sampling distribution
And if you'd like to play around with them more here are the links to the applets we looked at to explore sampling distributions in class!


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