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Confidence interval between the numbers

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Reference no: EM132432474

Problem: A researcher has constructed a confidence interval between the numbers of 4.08 and 11.92 for the confidence level of 95% it is known that the std in the population is 20

Required:

Question 1: What is the point estimation that led to that confidence interval?

Question 2: What was the sample size that the researcher has used?

Reference no: EM132432474

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