WEEKEND HW!

This weekend we have one more round of practice with our "2 prop z" stuff before we start our next chapter on Monday.

1.) This weekend please complete the "Inference for Two Proportions" worksheet provided in class (or at the bottom of this post).

• For the randomization condition just state that "we'll assume these are random samples of low/normal birth weight children."
• The answer key for this assignment is also provided at the bottom of this post--always check your answers!

2.) Please brainstorm (and write down) any lingering questions you have about one or two proportion z-intervals and tests--on Monday I can answer any questions before we move on to the new stuff!

3.) STUDY! TEST TUESDAY!

• Test includes...
• Matching Vocab
• AP FR
• AP MC
• The AP MC and FR will definitely have some "2 prop z" stuff, but can also include any topics from our last test!
• Here's the vocab list for Tuesday (chapters 19, 20, and 21)
• We did not have a chapter 21 vocab quiz, so some of these terms have not been on passed quizzes
• Confidence Interval
• Hypothesis Test
• Sample Statistic v. Population Parameter (given a value determine if it's a statistic or parameter)
• Sampling Variability
• 10% Condition (how and why?)
• Success/Failure Condition (how and why?)
• Randomization Condition (how and why?)
• Margin of Error
• Critical Value
• Standard error
• Interpret C. Level v. Interpret C. Interval
• Point Estimate
• Know how changing our confidence level and/or our sample size affects the ME and the width of an interval
• Null Hypothesis
• Alternative Hypothesis
• One v. Two Tailed Test
• Alpha Level/Significance Level
• Reject Ho (when do we reject? there is or is not evidence?)
• Fail to Reject Ho (when do we fail to reject? there is or is not evidence?)
• P-Value
• Standardized Test Statistic
• Type I Error
• Type II Error
• Alpha (in relation to types of error)
• Beta (in relation to types of error)
• Know how alpha and beta relate
• How can we decrease both alpha and beta?
• Power 
• Statistically Significant
• A result is statistically significant if we reject the null and determine that there is evidence of the Ha
• Know when to use a 1 prop z test, 1 prop z interval, 2 prop z test, or 2 prop z interval
• There will be another matching section where you have to match the correct procedure to a given context

Weekend HW + Key: