Weekend HW!

This weekend you should practice the hypotheses, conditions, and math steps for the 3 contexts provided in class (or below)!

• For each context....
• First, define your hypotheses
• Be sure to label the "Ho" and "Ha," and to use the correct parameter
• Next, check the conditions
• Random sample (or random assignment of treatments?)
• sample < 10% of population (in context)?
• np>10 and n(1-p)>10
• Remember to use the value of p from our null hypothesis because we always assume the null is true!
• Third, do the math!
• Copy your calculator screen (one prop z test)
• This provides the name of the test, z score, pvalue, p-hat, and n
• Be sure to label p-value, not just p from the calc (we have a lot of p's to keep track of)
• Show the z-score formula
• Be sure to label this as z!
• Just like we provided a formula to show how our calculator found a confidence interval, we're providing a formula to show how our calculator got the z-score!
• Sketch the Normal model
• Use the "draw" option under one-prop-z test to sketch the model!

• Here are the contexts in case you lost yours or were absent:

• Want to learn more about hypothesis testing or even to get ahead?
• Read chapter 20 of your textbook!
• Check out the "Step by Step" example on page 459
• Read about "one tailed tests" and "two tailed tests" under the "Alternative Alternatives" heading on page 458
• For calculator help look at the yellow box on page 461
• Read about p-values and what they mean on page 462
• Look at the "Step by Step" example using a hypothesis test AND a confidence interval on pages 463-466
• Watch the AP Stats Guy videos...
• Unit 5
• Hypothesis Testing = videos 6, 10, 11, 12, 13
• Confidence Intervals = videos 6, 7, 8, 9

If you're feeling ambitious this weekend, here's Monday's homework--you don't know how to write the conclusion yet, but you can complete the hypotheses, conditions, and math if you like....

Page 470-471: 9, 17, 21, 23

• For #17 we cannot use a one prop z test--you job is to explain why (there is more than one reason) 

On Monday (in class) we'll discuss what p-values mean, and then how we can use a p-value to write a conclusion. See you there!

Have a great weekend everyone! 

Oh, and if you get realllly bored, click me and check out some raps about Statistics.