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itsmichelle29

  • one year ago

i MEDAL AND fAN HELP PLZ Alex wanted to understand whether grade level had any relationship to their opinion on extending the school day. She surveyed some students and displayed the results in the table below: In favor Opposed Undecided Grade 9 5 3 9 Grade 10 8 12 9 Grade 11 15 16 10 Grade 12 12 6 11 Compare P(Grade 12 | opposed) with P(opposed | Grade 12). P(Grade 12 | opposed) = P(opposed | Grade 12) P(Grade 12 | opposed) > P(opposed | Grade 12) P(Grade 12 | opposed) < P(opposed | Grade 12) There is not enough information.

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  1. jim_thompson5910
    • one year ago
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    |dw:1438645732081:dw|

  2. jim_thompson5910
    • one year ago
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    |dw:1438645934546:dw|

  3. jim_thompson5910
    • one year ago
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    how many people opposed?

  4. itsmichelle29
    • one year ago
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    is that right

  5. itsmichelle29
    • one year ago
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    6

  6. jim_thompson5910
    • one year ago
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    how many people total opposed?

  7. itsmichelle29
    • one year ago
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    37

  8. jim_thompson5910
    • one year ago
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    so P(grade 12 | opposed) = (# who are in grade 12 AND opposed)/(# total that opposed) P(grade 12 | opposed) = 6/37 P(grade 12 | opposed) = 0.16216 agreed so far?

  9. itsmichelle29
    • one year ago
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    Umm yeah

  10. jim_thompson5910
    • one year ago
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    what would P(opposed | grade 12) be equal to?

  11. jim_thompson5910
    • one year ago
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    how many grade 12 total?

  12. jim_thompson5910
    • one year ago
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    P(opposed | grade 12) = (# who are in grade 12 AND opposed)/(# of grade 12)

  13. jim_thompson5910
    • one year ago
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    yes 6/29

  14. jim_thompson5910
    • one year ago
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    P(grade 12 | opposed) = 6/37 = 0.16216 P(opposed | grade 12) = 6/29 = 0.20690

  15. itsmichelle29
    • one year ago
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    Yes???

  16. jim_thompson5910
    • one year ago
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    yes

  17. itsmichelle29
    • one year ago
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    OMG thank u !!!

  18. jim_thompson5910
    • one year ago
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    np

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