Wait, wasnt it independence @lydthekid
@uncletim32 chi-square test for independence/association
Does anybody know of anyone who does the FRQs for stats after they are released? (Like Mr Calculus for calc).
Your stats teacher is wrong. If the answer is completley wrong, or you don;t answer it, you will most assuredly get a 0.
You would have to be really off topic to get a zero though. If you put in some effort, you’ll get a one.
You won’t know until they release the curve to teachers next year
I used the calculaor on ap pass but it was using old tests from 2002 and 2007. About what percent would I need in 2016 for a 5?
Same question as @holyground
Is there a teacher online who solves all the stats FRQs after they are released?
does anyone know when and where(like website) the answers are going to be up
What did everyone get for their probabilities? (#4 on the FRQ)
And lol I completely misread 5 part b and c… 
here are my answers, it is not exactly what i wrote but i am pretty sure it is similar.
question 1
a) histogram tends to be skewed to the right with one possible outlier. there is also a gap.
b) mean tends to increase because (forgot the reason)
c) median stays the same (forgot the reason)
question 2
a) ho- there is no association between (question in context)…Ha- there is association between (question in context) chi squared test conditions stated p value was like .005 so i rejected h0 and stated that there was association between…
b) ads did make a difference and the children who watched the ad for particular zuties tend to pick that choice. but overall children’s liked the choco zuties even if it was showen on the ad or not.
question 3
a) people who smoked two packs of cigarette a day and response- risk of Alzheimer disease increase 2.57.
b) observational because the people were not made to smoke the cigarette al the investigators did was observed there medical results.
c) exercise could be a coufounding variable because what if the people who did not smoke cigarette exercised and what if it was the exercise who made them have less chance of getting alzheimers. what if the exercise was the reason the risk of getting alzhiemer disease reduced.
question 4
a) binomialpdf x=30 trails 30 p= .85 forgot the answer but ya
b) forgot what i put
c) no it was not reasonable to believe because the probablity of getting the first 30 super ignitors was really low.
question 5
a) it was normal stated my conditions. 1 prop z interval. i am 95% confident that the true proportion of (in the question context) is between( calculator values after running the test)
b) forgot the answer
c) i put yes but i am pretty sure i am wrong.
question 6
a) as the number of semester increase, the number of salary tends to increase
b) slope was 1.1594(semesters) for every semester you increase , …(something something forgot)
c) it is negative moderate linear relationship
d)chemistry tends to be the highest, then comes physics and last is business.
e) forgot
i hope my answers matches with some of yall’s
Am I the only one who did a chi squared test of homogeneity for number 2? My reasoning was that in each ad group, there were the same amount of children (I believe 25?). My Ho was that the distribution was the same between all groups
@desiboy1998 yeah I got most of those answers 
feeling really good about the test now
Question is asking if there is an association.
But it’s ok, i made worse mistakes than you lol
The College Board just released the FRQs. Thus, we may discuss them without the risk of score cancellation.
@desiboy1998 Yeah, my answers match up with yours. I definitely don’t know if my reasoning was on point, but yeah. My friends said question 4 part b was a geometric, but I was completely out of it at that point and I think I did something like .85^30 x .15 x .85 for a 9. something x 10^-4. I did put no for question 5 part c though.
For part A in #6, will I earn the full point if I stated that there is convincing evidence that the newspaper’s claim is supported since there appears to be a moderately strong, positive linear relation between starting salary and number of semesters taken?
@desiboy1998 For #4 part c, wouldn’t it be reasonable to conclude that the failure rate of the super igniters is less than .15 since it was very unlikely to obtain the probability of .0076 if the super igniters didn’t have a failure rate .15 or lower?
@superbunny320 no, because this really has to do with a significance test for proportions, and the normality condition hasn’t been met because there need to be at least ten successes and failures, but there were zero failures