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Conclusive evidence that one of the proportions

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Reference no: EM131658850

Babies weighing less than 5.5 pounds at birth are considered "low-birth-weight babies." In the United States, 7.6% of newborns are low-birth-weight babies. The following information was accumulated from samples of new births taken from two counties.

Hamilton Shelby Sample size 150 200 Number of "low-birth-weight babies" 18 22 1. Develop a 95% confidence interval estimate for the difference between the proportions of lowbirth-weight babies in the two counties.

2. Is there conclusive evidence that one of the proportions is significantly different from the other? Explain using the results of part a. Do not perform any test.

Reference no: EM131658850

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