getting mininum sample size

Statistics
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  1. Suppose we want to build an interval estimate for the proportion of Indiana adults who are obese with a 95% confidence level and a margin of error of (two percentage points). What is the minimum sample size to achieve this margin of error? Use 0.30 for the planning value.

  1. We can make a confidence interval more precise (narrower) by,

    1. increasing the sample size.

    2. reducing the confidence level.

    3. increasing the confidence level.

    4. both (a) and (b) are correct.

May 7th, 2015

We can make a confidence interval more precise (narrower) by,

  1. increasing the sample size.


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May 7th, 2015

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May 7th, 2015
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May 7th, 2015
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