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pakinam Group Title

In a population of 500 voters, 40% belong to Party X. A simple random sample of 60 voters is taken. What is the chance that a majority (more than 50%) of the sampled voters belong to Party X?

  • one year ago
  • one year ago

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  1. perl Group Title
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    this is a binomial problem n = 500 , p = .4 , we want probability more than 50% of 500 chose party X. so more than 250 So we want the cumulative probability of x = 251 , 252, 253, ... 499 , 500 Do you have a solution in your book?

    • one year ago
  2. perl Group Title
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    the speed of the canadian goose is 35 km / 45 minutes = (35/45) km / min the speed of the hummingbird is 35 km/ 60 minutes = (35/60) km / min ok so far? now lets change to km/hr

    • one year ago
  3. pakinam Group Title
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    ok

    • one year ago
  4. perl Group Title
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    wait I did this wrong

    • one year ago
  5. perl Group Title
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    this is a binomial problem n = 60, p = .4 , we want probability more than 50% of a sample of 60 chose party X. So we want probability of more than 30 So we want the cumulative probability of x = 31 , 32, 33, ...58,59,60

    • one year ago
  6. perl Group Title
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    So I got .044480

    • one year ago
  7. perl Group Title
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    on a TI 83 calculator you can solve 1 - binomcdf( 60, .4, 30) , that will give you probability there is more than 50% choosing party x in your sample

    • one year ago
  8. abhi_abhi Group Title
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    0.044480314 is correct ans??? @perl

    • one year ago
  9. KABRIC Group Title
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    no

    • one year ago
  10. abhi_abhi Group Title
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    @KABRIC plz explain method .. how to solve this problem. n what is the correct ans ??

    • one year ago
  11. KABRIC Group Title
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    i am looking forward to that too friend

    • one year ago
  12. abhi_abhi Group Title
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    @KABRIC if u got method n soln plz explain me .. how to solve and correct ans

    • one year ago
  13. KABRIC Group Title
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    ok will let you know if i solve this one right ok

    • one year ago
  14. KABRIC Group Title
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    anyone with a more simple approach at this problem plz

    • one year ago
  15. dinakar Group Title
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    any one got the ans

    • one year ago
  16. dinakar Group Title
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    pls reply me

    • one year ago
  17. dinakar Group Title
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    In an egg carton there are 12 eggs, of which 9 are hard-boiled and 3 are raw. Six of the eggs are chosen at random to take to a picnic (yes, the draws are made without replacement). Find the chance that at least one of the chosen eggs is raw.

    • one year ago
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