Hamilton Shelby Sample size 150 200 Number of "low-birth-weight babies 22 22 8) Develop a 95% confidence interval estimate for the difference between the proportions (P₁= PHamilton, P2-PShelby) of low-birth-weight babies in the two counties. Do these data indicate that the proportion low-birth-weight babies is different in the two counties? Use a 5% level of significance.

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