At an election, it was found that people voted for Party X independently of their income group.
Question:
At an election, it was found that people voted for Party X independently of their income group. The following table shows that 12400 people from three income groups voted altogether, and that 7440 of them voted for Party X.
Find the value of a, of b and of c.
Transcribed Image Text:
LOW Medium High Cotals Ca a Totais 7440 3100 6820 2480 12 400
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Lets denote the number of people who voted for Party X in the medium income group as x Then we know ...View the full answer
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Related Book For
Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook
ISBN: 9781108407304
1st Edition
Authors: Dean Chalmers, Julian Gilbey
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