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A study on birth weight provided the following data (in ounces) in 12 newborns:
Country A
112
111
107
119
92
80
81
84
118
106
103
94
Country B
89
104
88
120
110
99
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.
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