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anonymous

  • one year ago

I really need help with this!! A national opinion poll found that 44% of all American adults agree that parents should be given vouchers good for education at any public or private school of their choice. Suppose that in fact the population proportion who feel this way is also 44%.

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  1. anonymous
    • one year ago
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    a) Many opinion polls have a "margin of error" of about 3% (meaning plus or minus 3%). What is the probability that an SRS of size 300 has a sample proportion that is within 3% of the population proportion p = 0:44? (Be sure to first, as always, justify the use of the normal approximation.) b) Answer the same question for SRSs of sizes 600 and 1200. What is the effect of increasing the size of the sample?

  2. anonymous
    • one year ago
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    I'm confused was that the entire question? Because that's not really a question...

  3. anonymous
    • one year ago
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    It's just a mathematical statement

  4. anonymous
    • one year ago
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    "a) Many opinion polls have a "margin of error" of about 3% (meaning plus or minus 3%). What is the probability that an SRS of size 300 has a sample proportion that is within 3% of the population proportion p = 0:44? (Be sure to first, as always, justify the use of the normal approximation.) b) Answer the same question for SRSs of sizes 600 and 1200. What is the effect of increasing the size of the sample?" that's the questions

  5. anonymous
    • one year ago
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    @Luigi0210 do you think you could help me?

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spraguer (Moderator)
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