<p>my first frq was about flies and cotton swabs… yet it seems like we have identical questions
do you remember what you put for these questions
- cell type/function
- hypothesis of ethyl alcohol
- signal transduction</p>
<p>Was it as difficult as we all thought it would be? 
at least for you?</p>
<p>what was the first question? the thing about how the brain received smells?
i was expecting to see the chi-square stuff in the grid ins… and then my first frq was chi-square
totally caught me off guard</p>
<p>yah…what do you think they will accept for the light one and the cell type and function one?</p>
<p>Can someone tell me what the null hypothesis should have been? And what does it tell u if the chi-square value is much bigger than the critical value?</p>
<p>Do you think you can recieve a good score without being too good at math? Also, what main ideas did you feel we’re emphasized more than others? Thanks :)</p>
<p>@wlsnehf
the null should state the proportions of flies given, and the alternate should state that at least one of the proportions is wrong. </p>
<p>Do you remember the last question for 1? propose a model for environmental cues affecting the experiment?</p>
<p>How do you guys think you did? Did you finish all of the multiple choice and grid in’s? What abou the short frq’s, i missed one of those…</p>
<p>@wlsnehf
if your chi-squared value is higher than the accepted value, your null hypothesis is rejected.</p>
<p>“the null should state the proportions of flies given, and the alternate should state that at least one of the proportions is wrong.”</p>
<p>What do you mean by ‘alternate?’ I thought null hypothesis is something like ‘ripeness level does not affect fruitfly behavior’ so I put expected values as 20, 20, 20.</p>
<p>alternate is the alternate hypothesis. It detracts from the null. So you could’ve written p= 20/60 20/60 20/60, which is basically the same as saying that at least one of the proportions in the null is wrong.</p>
<p>@magmar95 what did u get for chi-square value?
I did ((observed-20)^2 /20) + ((observed-20)^2/ 20) +((observed-20)^2 /20)
And it was a pretty big number…</p>
<p>Just took the exam!!! I forgot to do the ****ing calculations!!!-_- Still think I got a 5, though.</p>
<p>I messed up the chi-square thing royally. oh shoot me</p>
<p>I bubbled wrong on the tail end of the multiple choice…praying to god that I fixed it right</p>
<p>was it just me or were the mcqs really far winded? i literaly had to begin ignoring the huge passages that required me to read to answer the questions by the end…</p>
<p>I just used to data after one minute as expected values for the chi-square frq.</p>
<p>lets wait for more people</p>
<p>It was not that bad. At worst I got 20 MC questions wrong and 2/3 of all FRQs if all of my educated guesses were wrong.</p>
<p>It was ok… Lol.</p>