Thursday HW = Math Stuff!

**NO HOMEWORK DUE TOMORROW ...kinda. I'm going to push this assignment back to be due on Monday, but I am also going to give you a little bit more tomorrow...

Tonight, I would....
1.) Do #'s 1, 4, 6, and maybe 7
2.) Do the bonus stamp

Want to earn +3 bonus stamps? ONLY ACCEPTED TOMORROW (Friday)

• Figure out how to do #5--finding sample size given ME!
• If you do this you can also apply this strategy to #3!
• You can see an example in your textbook on p. 442 in the "choosing your sample size" section...
• Or, Google it! "how to find n given margin of error for proportions"
• Or, watch YouTube: "how to find n given margin of error for proportions"
• Your final answer will be one number...circle it...

Due Monday: 

1.) Please complete the "Understanding CI Formula" worksheet provided in class or linked below. 

• Understanding CI Formula HW (Click Me...seriously....do it!)
• You can skip #5 (we'll look at this type of problem in class tomorrow); or, teach yourself how to do it for bonus stamps!
• The answers to questions 1, 2, 3, and 6 are all numbers! Do math and stuff!
• For the first part of 7 you're just showing the "math work"--the calculator screen and formula, you don't have to interpret or check conditions
• Some HW Tips--try on your own first, then check here...
• #'s 1 and 6 = calculate ME (like that slide from class)--use your notes!
• For #2 I would use an SAT style strategy...you're given the margin of error you need; try plugging in your options for n to see which is the SMALLEST sample size that leads to a ME of 4%
• ME = the "within 4%"....
• For #3: this time you're given ME, n, and p-hat; to find the confidence level you'll need to solve the equation for z*, then use the table to see which confidence level you're closest to
• For the second part of 7: "Does the 99% confidence interval provide evidence that the state will legalize sports betting? Why or why not?"....
• Consider your interval....
• Now think about this: what % of people would have to vote in favor of sports betting for it to be legalized?
• Does our interval definitively suggest that the % who support sports gambling meets that criteria?
• This is not a long explanation--one sentence here.....

2.) Please complete.....