June SAT Math II Thread

Test Preparation SAT Subject Test Preparation
881

<p>

</x<pi></p>

<h1>13 is k / root (k^2+4)</h1>

<h1>22 is .32</h1>

<h1>36 new x-intercept is at x=0</h1>

882

<p>Agreed with xAlex452.</p>

883

<p>For the people who said the lake county problem was .32…</p>

<p>I put .27. Becausssseee, don’t you add up the total for Lake County, then put the Indiana number over that? Conditional probability…Lake County is given, means out of total for Lake County. And then you need the probability of picking Indiana…so P(Indiana & Lake County)/P(Lake County)…which satisfies the conditional probability formula: P(AlB) = P(A&B)/P(B). So the answer was .27, I’m pretty sure…</p>

884

<p>@lollypop7218: I don’t know… I put 0.32 (I think). The question showed number of people in Indiana and the number of people in the whole US. So the probability should be (the number of people in the Lake County in Indiana)/(number of people in Lake counties across the US).</p>

<p>The Lake counties in US includes the Lake County of Indiana, so doesn’t my reasoning make proper sense?</p>

885

<p>hey what was the answer to the last one with 3 planes and 3 lines intersection?</p>

886

<p>What do you guys think a 41.25 will get?</p>

887

<p>a 780. now what was the answer to the last one.</p>

888

<p>^I and III</p>

889

<p>2 wrong 1 omitted so far, hopefully i don’t get anything else wrong :/</p>

890

<p>One thing we need to consider when trying to predict the curve is the type of people that take the test at this time of year. does taking the test in June mean one is lazy, and more likely to be stupid? or does it mean it includes people that just finished precalc and they could be average? lets try to figure out how the people differ from different test dates</p>

891

<p>^ isn’t the curve predetermined?</p>

892

<p>The curve is predetermined.</p>

893

<p>darnit i know with 8 blank and 7 wrong…ill failllllll : (</p>

894

<p>If the value of every number in a set goes up by five, won’t the standard deviation not be altered? Wont it stay the same? I haven’t taken stat yet, so somebody please correct me if I’m wrong.</p>

895

<p>^Standard deviation doesn’t change when you add or subtract a number. Multiplying and dividing will change the standard deviation.</p>

<p>@talib3: Keep trying. When you don’t get a good score, just forget it and move on. Try to improve next time though.</p>

896

<p>idk i did it on my calculator and SD went up</p>

897

<p>i think 800?</p>

898

<p>How do they predetermine the curve? </p>

<p>Looking at these links, looks like many people found this test very hard.</p>

<p>[Did</a> anyone else find the june 2011 sat II math II test to be very hard? - Yahoo! Answers](<a href=“http://cc.bingj.com/cache.aspx?q=http%3A%2F%2Fanswers.yahoo.com%2Fquestion%2Findex%3Fqid%3D20110604084126AAcAP0X&d=27022856831304021&mkt=en-US&setlang=en-US&w=8e63d4fe,abb2658c]Did”>http://cc.bingj.com/cache.aspx?q=http%3A%2F%2Fanswers.yahoo.com%2Fquestion%2Findex%3Fqid%3D20110604084126AAcAP0X&d=27022856831304021&mkt=en-US&setlang=en-US&w=8e63d4fe,abb2658c)</p>

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899

<p>@talib3: I don’t know about that… I’m pretty sure standard deviation doesn’t change. Try it again; maybe you’ve made a mistake. But I’m pretty sure SD doesn’t change with addition or subtraction.</p>

<p>What score would I get if I had 2 omits, and 1 wrong?</p>

900

<p>@studyingforchem i got the same score there. and that question asked what is NOT true</p>