Prenatal vitamins and Autism. Researchers studying the link between prenatal vitamin use and autism surveyed the mothers of a random sample of children aged 24 - 60 months with autism and conducted another separate random sample for children with typical development. The table below shows the number of mothers in each group who did and did not use prenatal vitamins during the three months before pregnancy. Prenatal Vitamin Autism Typical Development TotalNo vitamin11566181Vitamin144163307Total259229488Conduct the hypothesis test for the stated null and alternative. Round all calculated answers to four decimal places.Ho: The variables use of prenatal vitamins during the three months before pregnancy and autism are independent.HA: The variables use of prenatal vitamins during the three months before pregnancy and autism are not independent.1. Enter the expected values for the hypothesis test in the table below, rounded to four decimal places.Prenatal VitaminAutismTypical DevelopmentNo vitaminVitamin2. Calculate the test statistic for this hypothesis test. X² =3. Calculate the degrees of freedom for this hypothesis test.4. Calculate the p-value for this hypothesis test. p-value =

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Description: Prenatal vitamins and Autism. Researchers studying the link between prenatal vitamin use and autism surveyed the mothers of a random sample of children aged 24 - 60 months with autism and conducted another separate random sample for children with typ

Solution: The observed frequency table is Parental vitamin Autism Typical Development Total…

Answered: Prenatal Vitamin Autism Typical…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

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Prenatal vitamins and Autism. Researchers studying the link between prenatal vitamin use and autism surveyed the mothers of a random sample of children aged 24 - 60 months with autism and conducted another separate random sample for children with typical development. The table below shows the number of mothers in each group who did and did not use prenatal vitamins during the three months before pregnancy.

Prenatal Vitamin Autism Typical Development Total
No vitamin
115
66
181
Vitamin
144
163
307
Total
259
229
488
Conduct the hypothesis test for the stated null and alternative. Round all calculated answers to four decimal places.
Ho: The variables use of prenatal vitamins during the three months before pregnancy and autism are independent.
HA: The variables use of prenatal vitamins during the three months before pregnancy and autism are not independent.
1. Enter the expected values for the hypothesis test in the table below, rounded to four decimal places.
Prenatal Vitamin
Autism
Typical Development
No vitamin
Vitamin
2. Calculate the test statistic for this hypothesis test. X² =
3. Calculate the degrees of freedom for this hypothesis test.
4. Calculate the p-value for this hypothesis test. p-value =

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