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StClowers

  • 2 years ago

Three randomly selected households are surveyed. The numbers of people in the households are 1, 4 and 10. Assume that the samples of size n=2 are randomly selected with replacement from the population of 1, 4 and 10. Listed below are the nine different samples: 1,1 1,4 1,10 4,1 4,4 4,10 10,1 10,4 10,10 Find the variance of each of the nine samples: (find s^2 and probability) s^2 is 4.5, 0, or 1? Whats the probability? s^2 is 9, 4.5, 2.3? Whats the probability? s^2 is 18, 72, or 9? Whats the probability? s^2 is 20.3, 81 or 40.5? Whats the probability?

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  1. andijo76
    • 2 years ago
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    I think this one you need to do it this way |dw:1392269734421:dw|

  2. andijo76
    • 2 years ago
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    add each one individualy and divide by 2

  3. StClowers
    • 2 years ago
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    LOL I already figured out this one ..I have more from today though...

  4. andijo76
    • 2 years ago
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    is that how you do it I was not sure if this is the right way to do it i posted this one but did not get an answer I do not have any others like this i dont think

  5. andijo76
    • 2 years ago
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    yours is a little different then mine my numbers are 1,3 and 8

  6. StClowers
    • 2 years ago
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    funny.

  7. andijo76
    • 2 years ago
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    how weird is it that we are from the same school doing the same or almost the same questions

  8. StClowers
    • 2 years ago
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    LOL - very weird!

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