A2: Test of Independence In 1992, the United States (US) Public Health Service and the Centers for Disease Control and Prevention recommended that all women of childbearing age consume 400μg of folic acid daily to reduce the risk of having a pregnancy that is affected by a neural tube defect such as spina bifida or anencephaly. In a study by Stepanuk et al., 693 pregnant women called a tetralogy information service about their use of folic acid supplementation. The researchers wished to determine if preconceptions of the use of folic acid and race are independent. Ethnicity Folic Acid Yes No White 260 299 559 Black 15 41 56 Other 7 14 21 Total 282 354 636 A2.1: Set up hypotheses for the above problem A2.2: What is the appropriate test statistic to use and why? A2.3: Report the test statistics and its p-value. What are your conclusions?

A2: Test of Independence In 1992, the United States (US) Public Health Service and the Centers for Disease Control and Prevention recommended that all women of childbearing age consume 400μg of folic acid daily to reduce the risk of having a pregnancy that is affected by a neural tube defect such as spina bifida or anencephaly. In a study by Stepanuk et al., 693 pregnant women called a tetralogy information service about their use of folic acid supplementation. The researchers wished to determine if preconceptions of the use of folic acid and race are independent. Ethnicity Folic Acid Yes No White 260 299 559 Black 15 41 56 Other 7 14 21 Total 282 354 636 A2.1: Set up hypotheses for the above problem A2.2: What is the appropriate test statistic to use and why? A2.3: Report the test statistics and its p-value. What are your conclusions?

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter6: The Trigonometric Functions

Section6.4: Values Of The Trigonometric Functions

Problem 24E

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