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muscrat123

  • one year ago

Sue wants to know how many families in her small neighborhood of 50 homes would volunteer to help at a neighborhood animal shelter. She put all the addresses in a bag and drew a random sample of 25 addresses. She then asked those families if they would volunteer to help at the shelter. She found that 18% of the families would volunteer to help at the shelter. She claims that 18% of the neighborhood families would be expected to help at the animal shelter. Is this a valid inference? Yes, this is a valid inference because the 25 families speak for the whole neighborhood Yes, this is a vali

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  1. muscrat123
    • one year ago
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    Is this a valid inference? Yes, this is a valid inference because the 25 families speak for the whole neighborhood Yes, this is a valid inference because she took a random sample of the neighborhood No, this is not a valid inference because she only asked 25 families No, this is not a valid inference because she did not take a random sample of the neighborhood

  2. muscrat123
    • one year ago
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    @ali2x2

  3. muscrat123
    • one year ago
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    @jim_thompson5910

  4. jim_thompson5910
    • one year ago
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    what are your thoughts on this?

  5. muscrat123
    • one year ago
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    i think it is c

  6. jim_thompson5910
    • one year ago
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    so you think she should have asked more families?

  7. muscrat123
    • one year ago
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    yes

  8. jim_thompson5910
    • one year ago
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    but 25 families is 50% of the population 25/50 = 0.5 so I'd say she has a big enough sample size

  9. jim_thompson5910
    • one year ago
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    the fact that it's random is also a good sign too

  10. muscrat123
    • one year ago
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    wait, now i think it would be b

  11. jim_thompson5910
    • one year ago
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    yeah it's valid because she randomly selected families

  12. muscrat123
    • one year ago
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    thank you!

  13. jim_thompson5910
    • one year ago
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    no problem

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