Tuesday HW = Sampling Distributions!

1.) Tomorrow we will start class with a 5-8 minute quiz--the quiz is entirely focused on the conditions.

• Be sure to name the type of sampling distribution
• Review your notes--know how to check conditions for either type of sampling distribution
• Review the warmup about "which conditions fails?" 
• Quiz:
• 1 open ended: determine if a sampling distributions for means or proportions is appropriate (check conditions!)
• 2 more: determine which conditions fails

2.) Tuesday's HW = finish today's classwork!

• More Sampling Distributions! (HW. You--click me!)
• Remember...
• A question uses the sampling distribution for means ONLY if the question is focused on the MEAN of a sample!
• There is one question on here that does not require the use of a sampling distribution....
• Check conditions for #4!
• Skip conditions for any multiple choice!
• #7 is something new...here's what to do:
• Assume that sigma = 1 (or any other number) and assume we use a sampling distribution for means (because that formula is easier to work with)
• Calculate the standard deviation of the sampling distribution for means with sigma = 1 a sample size of 50.
• Now, calculate the standard deviation with sigma = 1 and n = 200.
• How did the standard deviation change? 
• This is an idea called "diminishing returns" that we'll quickly discuss tomorrow.

3.) Textbook HW Questions and Some Notes....

• 2010 AP FR (from class);



• 2 HW questions (last night's HW)

4.) Tomorrow's HW = more sampling distributions!

• Want to get a head start? Tomorrow's HW is just like tonight's. Here you go:
• Sampling Distribution Summary HW! (Click Me!)