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?

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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?
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Transcribed Image Text:LabVIIDocument - Word Singleton, Rose File Home Insert Design Layout References Mailings Review View Help Tell me what you want to do Share ✗Cut Times New Ro▾12 Α' Α' Aa▾ AaBbCcl AaBbCc AaBbC AaBbCc AaB AaBbcct AaBbCcl AaBbCcl Find ▾ ab Copy ac Replace Paste BIU abc x, x² A 1 Normal No Spac... Heading 1 Heading 2 Title Subtitle Subtle Em... Emphasis Select▾ Format Painter Clipboard Font Paragraph Styles Editing Page 3 of 11 1280 words 呕 Type here to search 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? 近 Activate Windows Go to Settings to activate Windows. + 100% 72°F Mostly 6:48 PM 3/27/2024
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