AP Forms and $ are due on Wednesday (3/1)!
This weekend please complete the following in your textbook:
Page 447: 11ad, 13abd, 17, 23abc, 37
- **Don't be lazy on this homework! We will be focusing on confidence intervals for the remainder of the year, so the more work you put in now the better prepared you'll be!
- 11a: find the margin of error for 90% confidence...
- 11d: now find the margin of error for 99% confidence....
- 13a: "do the math"--show the formula and get your interval
- 13b: interpret your interval, and for 13c use your interval to answer the question (like today's stamp)
- 17a: check the conditions and do the math! Then use your interval to answer b (like today's stamp)
- 23: a = conditions, b = math, c = interpret interval
- 37: this is an interesting question; you want the confidence level, so you'll have to figure out what z* is, then use this to work back and find what the confidence level was
- You know the margin of error (ME) = 2.5% or 0.025
- Set this equal to "the part of the formula that represents ME"
- Then, substitute p-hat, q-hat, and n, and solve this equation for z*
- (All math!)
On Monday we'll get back into the mathematics/formula behind a confidence interval--see you there!
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