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Determine the average weight of newborns

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Reference no: EM132394209

Imagine you're trying to determine the average weight of newborns whose mother ate only vegan food during pregnancy. Based on a sample of 60 newborns, with a population standard deviation of 0.3 pounds, you find a sample average of 7.2 pounds.

  • What's the confidence interval at 95%?  What is it at 99.9%?
  • What would the confidence intervals (for 95% and 99.9%) be if the sample average was based on 600 newborns instead of 60?

Include the upper and lower bounds for each of the four intervals and be sure to include what you put into Excel to determine your answer. Round your answers to three decimal places. 

Reference no: EM132394209

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