1. (Text p.340, question 13).The data set lowbwt contains information for a sample of 100 low birth weight infants born in two teaching hospitals in Boston. Indicators of a maternal diagnosis of toxemia during the pregnancy--a condition characterized by high blood pressure and other potentially serious complications--are saved under the variable name tox. The value 1 represents a diagnosis of toxemia and 0 means no such diagnosis.
2. Test the null hypothesis at the 0.05 level of significance that the true population proportion of mother who experienced toxemia during pregnancy is equal to 15% (₀ = 15%). What is the p-value and conclusion?
   1. P=-0.0929; accept the null hypothesis. 0.092 is greater than the 0.05 level of significance. Therefore, the null hypothesis that the true population proportion of mothers who experienced toxemia during pregnancy cannot be rejected.
3. Test the null hypothesis at the 0.05 level of significance that the true population mean of gestational age is equal to 37 weeks. What is the p-value and conclusion?

Please perform two-sided tests only.

I need help with 3, because I don't have the textbook.