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N: Name the test The conditions are met to use a |Chi-Square Independence Test v T: Test Statistic The formula set up of the first
N: Name the test The conditions are met to use a |Chi-Square Independence Test v 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/ E Final answer from technology rounded to 2 decimal places: x = O: Obtain the P-value Report the final answer to 4 decimal places. It is possible when rounded that a p-value is 0.0000 P-value = M: Make a decision Since the p-value ? v we fail to reject Ha v S: State a conclustion . There is significant evidence to conclude that whether or not a child has autism v and infant are independent for all infants.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 yes no Row Total breastmilk 6 422 428 formula with DHA/ARA 7 1157 1164 formula without DHA/ARA 14 526 540 Column Total 27 2105 2132
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