Some recent studies have suggested that the chance of a baby being born prematur

Question

Some recent studies have suggested that the chance of a baby being born prematurely

are increased when the mother suffers from chronic oral infections such as periodontal

disease. An interested researcher collected the following data. Applying Yates’s

correction, conduct a chi-square analysis to test the null hypothesis that pregnant women

who suffer from chronic oral infections are no more likely to give birth prematurely than

women who do not suffer from chronic oral infections.

Suffers from Oral Chronic Infection

                                       Yes                   No

Baby Born Premature       

                             Yes     44                     8

                              No      6                    57

Explanation / Answer

The test hypothesis is Ho:pregnant women who suffer from chronic oral infections are no more likely to give birth prematurely than women who do not suffer from chronic oral infections. Ha: Ho not true The test statistic is Chi-square: 65.364 degrees of freedom: 1 p-value: 0 Since p-value is very small, we reject Ho.

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