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The following data represent the age (in weeks) at which babies first crawl based on a...
The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers. The data are normally distributed and s equals = 9.948 weeks. Construct and interpret a 90% confidence interval for the population standard deviation of the age (in weeks) at which babies first crawl. 54,32,43,34,41,27 47,36,56,27,39,28
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