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Statistics, slightly

  1. Oct 27, 2004 #1

    Alkatran

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    Statistics, slightly urgent

    my answers:
    (a) F or S = F + S - F and S = .47 + .39 - .22 = 64%
    (b) F and (not S) = F - F and S = .47 - .22 = 25%
    (c) No, F*S <> 22%

    I got (b) wrong. On the answer sheet (this is a practice midterm) there is:
    Well I drew a picture and I still think it's .47 - .22, not .47 - .22*.25

    :grumpy:
     
  2. jcsd
  3. Oct 27, 2004 #2

    uart

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    Hmmm, have you considered that the given answer may be a typo that is supposed to read, 47-.22 = .25 (draw a picture of the events to see this)
     
    Last edited: Oct 27, 2004
  4. Oct 27, 2004 #3

    Alkatran

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    Yes, that's why I posted here to confirm.
     
  5. Oct 27, 2004 #4

    uart

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    Ok then, let me confirm that I'm pretty sure that 0.25 is the correct answer. :)
     
  6. Oct 27, 2004 #5

    Alkatran

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    That is Excellent
     
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