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Is there a relationship between autism and what an infant is fed? To determine if there is, a researcher asked a random sample of mothers what they had fed their infant and they also recorded whether or not the child was autistic. The data are in the table below. Do the data provide enough evidence to show that that what an infant is fed and autism are dependent? Test at the 5% level. what an infant is fed Row Total yes 6. no breastmilk 421 427 formula with DHA/ARA 1156 1162 formula without DHA/ARA 527 542 Column Total 27 2104 2131 659

Is there a relationship between autism and what an infant is fed? To determine if there is, a researcher asked a random sample of mothers what they had fed their infant and they also recorded whether or not the child was autistic. The data are in the table below. Do the data provide enough evidence to show that that what an infant is fed and autism are dependent? Test at the 5% level. what an infant is fed Row Total yes 6. no breastmilk 421 427 formula with DHA/ARA 1156 1162 formula without DHA/ARA 527 542 Column Total 27 2104 2131 659

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Is there a relationship between autism and what an infant is fed? To determine if there is, a researcher asked a random sample of mothers what they had fed their infant and they also recorded whether or not the child was autistic. The data are in the table below. Do the data provide enough evidence to show that that what an infant is fed and autism are dependent? Test at the 5% level. what an infant is fed breastmilk Row Total yes 6 no 421 427 formula with DHA/ARA 6 1156 1162 formula without DHA/ARA 15 527 542 Column Total 27 2104 2131
Transcribed Image Text:Is there a relationship between autism and what an infant is fed? To determine if there is, a researcher asked a random sample of mothers what they had fed their infant and they also recorded whether or not the child was autistic. The data are in the table below. Do the data provide enough evidence to show that that what an infant is fed and autism are dependent? Test at the 5% level. what an infant is fed breastmilk Row Total yes 6 no 421 427 formula with DHA/ARA 6 1156 1162 formula without DHA/ARA 15 527 542 Column Total 27 2104 2131
Check the assumptions: 1. Enter the matrix of expected values. Round values to 2 decimal places: o Are all of the values in the matrix of expected values greater than or equal to 5? [Yes 2. No N is given, we will assume N N: Name the test The conditions are met to use a Chi-Square Independence Test T: Test Statistic The formula set up of the first and last term of the test statistic is as follows: Round initial values to 2 decimal places: (0 - E) x = E 2/ )* 2/ + E Final answer from technology rounded to 2 decimal places:
Transcribed Image Text:Check the assumptions: 1. Enter the matrix of expected values. Round values to 2 decimal places: o Are all of the values in the matrix of expected values greater than or equal to 5? [Yes 2. No N is given, we will assume N N: Name the test The conditions are met to use a Chi-Square Independence Test T: Test Statistic The formula set up of the first and last term of the test statistic is as follows: Round initial values to 2 decimal places: (0 - E) x = E 2/ )* 2/ + E Final answer from technology rounded to 2 decimal places:
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