· A study on birth weight provided the following data (in ounces) in 12 newborns:

·         A study on birth weight provided the following data (in ounces) in 12 newborns:  

·         Determine a 95% confidence interval of population mean birth weight in the Country A. Interpret it.

·         Determine a 95% confidence interval of difference of population mean birth weight in the Country A and mean birth weight in the Country B.

·         Determine a 95% confidence interval of difference of population proportions to compare the proportion of birth weight over 100 oz between Country A and Country B.