crackgretodoms Posted May 27, 2011 Share Posted May 27, 2011 Attached document contains 2 problems from powerprep, can someone please explain the solution? I gave the powerprep test today, ideally I should get 750+ (I know answers for 27 questions), but I made silly mistakes & I got 680. I'm praying God that I should n't do these silly mistakes in the real exam on 30th June. Thanks! Quote Link to comment Share on other sites More sharing options...
webaddict Posted May 27, 2011 Share Posted May 27, 2011 #1. Amount budgeted for the environment: 6.9 (from the pie chart) Amount allocated to national parks: (1/3)(6.9) = 2.3 Amount allocated to other environmental areas: 6.9 - 2.3 = 4.6 #2. You are correct. Alternatively, you can assume that there are 100 people polled and go from there. Quote Link to comment Share on other sites More sharing options...
crackgretodoms Posted May 27, 2011 Author Share Posted May 27, 2011 Oh very simple, I did't understand when I read 1st time, now its clear. Thanks for the explanation! Is the 2nd one correct? % polled for P = [(80)(70)/100] + [(20)(20)/100] = 56+4 = 60 Quote Link to comment Share on other sites More sharing options...
webaddict Posted May 27, 2011 Share Posted May 27, 2011 Is the 2nd one correct? % polled for P = [(80)(70)/100] + [(20)(20)/100] = 56+4 = 60 Yes. I think I edited my post after you saw it. Quote Link to comment Share on other sites More sharing options...
crackgretodoms Posted May 27, 2011 Author Share Posted May 27, 2011 Oh ok, thanks a lot for your quick help! Quote Link to comment Share on other sites More sharing options...
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