Hamilton / Shelby Sample size 150 / 200 Number of “low-birth-weight babies 1

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 low-birth-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?

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