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Confidence Intervals In a random sample of 1100 American adults it was found that 320 had hypertension...

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Statistics

Confidence Intervals

  1. In a random sample of 1100 American adults it was found that 320had hypertension (high-blood pressure). The US Department of Healthand Human Services (HHS) wants the population proportion ofhypertension to 16% by 2022.

    1. Find the 95% confidence interval for the proportion of all adultAmericans that have hypertension.

    2. Interpret the confidence interval in the words of theproblem.

    3. Find the error bound.

    4. Does this data and analysis provide evidence that the populationproportion of hypertension is different from the HHS target value?Justify!

Answer & Explanation Solved by verified expert
3.8 Ratings (429 Votes)
given data and somecalculations aresample size n 1100sample proportion 320 1100 02909z critical valuefor 95 confidence level both tailed    See Answer
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