The data set lowbwtsav contains information for a sample of, Ask an Expert

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The data set lowbwt.sav contains information for a sample of 100 low birth weight infants born in two teaching hospitals in Boston. Measurements of systolic blood pressure are saved under the variable name sbp and indications of gender-with 1 representing a male and 0 a female-under the name sex.

(a) Obtain a histogram of systolic blood pressure. Based on the graph, do you think that blood pressure is approximately normally distributed?

(b) Use the Shapiro-Wilks test to check for the normality of blood pressure. Carefully state your conclusion.

(d) Test the null hypothesis that among low birth weight infants, the mean systolic blood pressure for boys is equal to the mean for girls. Use a two-sided test at the 5% level of significance. What do you conclude?

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Macroeconomics, Economics

Category:- Macroeconomics
Reference No.:- M9530626

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