Babies Weighing Less Than 5

question 76

Essay

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.
a.Develop a 95% confidence interval estimate for the difference between the proportions of low-birth-weight babies in the two counties.
b.Is there conclusive evidence that one of the proportions is significantly more than the other? If yes, which county? Explain, using the results of part (a). Do not perform any test.

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Definitions:

Accumulated Depreciation

The total amount of depreciation expense that has been recorded for an asset since it was put into use, reducing its book value on the balance sheet.

Buildings

Physical structures owned by a business that are used for operational purposes, considered long-term assets on the balance sheet.

Other Income/Expense

Revenue or costs that are not related to a company's main business operations, such as gains or losses from investments or foreign exchange.

Loss

A financial term referring to the condition where expenses exceed revenues, leading to a negative income.