Today in class, we completed the Reese's task in 2nd and almost did in 3rd. I'm confident that 3rd can finish it now. To summarize the two tasks we've done so far, the Central Limit Theorem states:
When we take many samples of size n from a large population and look at data, as long as the population is at least 10 times the size of our sample, A) the distribution of the sample means approximates a normal curve, B) the mean of the sample means is pretty much the mean of the population and C) the standard error of the sample means is the standard deviation of the original population divided by the square root of n.
If we take many samples of size n from a large population and look at proportions, as long as np>10 and n(1-p)>10, A) the distribution of the sample proportions approximates a normal curve, B) the mean of the sample proportions (p hats) is pretty much the proportion of the population and C) the standard error is sqrt(p(1-p)/n).
The confidence interval task should help you see the "how sure" part of statistics works... The tentative assignment sheet for this unit is attached: Download Tentative Schedule and answers to the confidence interval task are attached in 3 parts Download Confidence Task answers A Download Confidence Task answers B Download Answers to Confidence Interval
On Tuesday, you can make up either one (but not both) of the previous quizzes. The substitute will ask you Monday which one you plan to take. Here is a review for the first one: Download Acc Math 3 Summer Review Problems compact
The solutions to the problems on the back of your definition worksheet are attached here: Download Answers to definition problems. If you need anything else, either email me or ask Coach Rinehimer.
