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    Statistical Techniques
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    Exam 9: Estimation and Confidence Intervals
  5. Question
    A Population Is Estimated to Have a Standard Deviation of 25
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A Population Is Estimated to Have a Standard Deviation of 25

Question 39

Question 39

Short Answer

A population is estimated to have a standard deviation of 25. We want to estimate the population mean within 2, with a 95 percent level of confidence. How large a sample is required?

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