Here are summary statistics for randomly selected weights of newborn girls: n=245, x=31.1 hg, s=7.9 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 29.5 hg <<33.1 hg with only 17 sample values, x= 31.3 hg, and s=3.5 hg? What is the confidence interval for the population mean μ? ng<
Here are summary statistics for randomly selected weights of newborn girls: n=245, x=31.1 hg, s=7.9 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 29.5 hg <<33.1 hg with only 17 sample values, x= 31.3 hg, and s=3.5 hg? What is the confidence interval for the population mean μ? ng<
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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**Confidence Interval for Newborn Girls' Weights**
Here are summary statistics for randomly selected weights of newborn girls:
- Sample size (n): 245
- Sample mean (x̄): 31.1 hg
- Sample standard deviation (s): 7.9 hg
**Task:**
Construct a confidence interval estimate of the mean using a 95% confidence level.
Additionally, compare these results to a previously calculated confidence interval:
29.5 hg < μ < 33.1 hg, which was based on only 17 sample values with a mean (x̄) of 31.3 hg and a standard deviation (s) of 3.5 hg.
**Question:**
What is the confidence interval for the population mean μ?
- Fill in the blanks for the interval:
__ hg < μ < __ hg
_(Round to one decimal place as needed.)_
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