Thursday HW!

Tonight you have two tasks for homework:

HW Task #1: Finish the "side by side" hypothesis test and confidence interval for the "CC v. CC+MMR" context we started today in class.

• If you were out this context is below or it is our last slide for this chapter

HW Task #2: Complete the (5) multiple choice questions provided in class or below. (titled "Chapter 22 MC: Inference for Differences in Proportions")

• SHOW WORK FOR QUESTIONS 3 AND 5; I may collect this tomorrow and grade it (or I may not); but if I collect/grade you will not earn credit for 3 or 5 without the correct work
• For the 3rd question (bottom of front page) it's all about vocab--here we have to know what the "standard error" is...(this came up today in class)
• For the top question on the back (#4) we need to find the pvalue from our calculator; this will narrow it down to 2 options. From there, we have to know the definition of p-value to choose the correct answer
• And for the last question we need the p-value to determine what our conclusion would be; however, we are only given the "test statistic" (z score)....
• So, we have to find the p-value only given the z score...we did a packet once about finding pvalues only given z scores (this was also the bonus on our test)
• We also have to consider the alternative hypothesis to decide if this is a one or two tailed test, which will affect our pvalue
• Once we get the pvalue we can decide if we would reject or fail to reject the null, and then we can decide if there "is or is not evidence..."

Another Stamp Opportunity (DUE TOMORROW):

• You should have two leftover slides from our last chapter...one is about testing for ESP at Duke University and the other is about therapeutic touch (TT).
• Stamp: Write the hypotheses for each scenario. Write the hypotheses on the slide (front or back).
• Both hypotheses should be ultimately written using mathematical notation/numbers, but you could start by considering the hypotheses in words...
• For example, with the Duke University study we're trying to see/prove if someone has ESP--so our alternative is "has ESP," and we assume (in our null) that a person does not have ESP.....
• And now somehow we have to translate these ideas into mathematical notation about "proportions of times the person identifies the card correctly...."
• If you lost the slides you cannot earn these stamps. 

Today's Class Recap:

• Stamp = Review/Practice with our snoring context....
• Interpret C. Level
• Find ME
• How can we increase/decrease ME?
• Interpret Power
• Check out these answers--you can use these as generic templates for interpreting power and confidence level:
• 
• HW Questions?
• Ch. 22 Classwork:
• Used the context on our last slide to do a hypothesis test and a confidence interval for two proportions, side by side (this is what we're finishing for homework)
• Tomorrow in class we'll do one more round of practice, answer any lingering questions we have, and then it's on to our next chapter (23) for Monday

Remember--we have another test (our last of the quarter) coming on Tuesday! 

• Matching Vocab
• AP MC (anything related to tests and intervals, but definitely more emphasis on the 2 prop z stuff)
• AP FR(anything related to tests and intervals, but definitely more emphasis on the 2 prop z stuff)

HW Task #1: Finish the "side by side" hypothesis test and confidence interval for the "CC v. CC+MMR" context we started today in class.

HW Task #2: Complete the (5) multiple choice questions provided in class or below. (titled "Chapter 22 MC: Inference for Differences in Proportions")