Here are summary statistics for randomly selected weights of newborn girls: n=171, x-29.1 hg, s-7.7 hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 26.6 hg<µ<31.2 hg with only 14 sample values, x=28.9 hg, and s-3.3 hg? What is the confidence interval for the population mean u? hg<μ

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Here are summary statistics for randomly selected weights of newborn girls: 
- Sample size (\( n \)) = 171
- Sample mean (\( \bar{x} \)) = 29.1 hg
- Sample standard deviation (\( s \)) = 7.7 hg

Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 26.5 hg < \( \mu \) < 31.2 hg with only 14 sample values, \(\bar{x}\) = 28.9 hg, and \( s \) = 3.3 hg?

What is the confidence interval for the population mean \( \mu \)?

\[ \text{hg} < \mu < \text{hg} \]

(Round to one decimal place as needed.)
Transcribed Image Text:Here are summary statistics for randomly selected weights of newborn girls: - Sample size (\( n \)) = 171 - Sample mean (\( \bar{x} \)) = 29.1 hg - Sample standard deviation (\( s \)) = 7.7 hg Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 26.5 hg < \( \mu \) < 31.2 hg with only 14 sample values, \(\bar{x}\) = 28.9 hg, and \( s \) = 3.3 hg? What is the confidence interval for the population mean \( \mu \)? \[ \text{hg} < \mu < \text{hg} \] (Round to one decimal place as needed.)
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