14. A study was done to test the relationship between breast milk and a child’s subsequentIQ. The researchers analyzed IQ data on 946 children at the age of 7 ½ to 8 years. Themothers of the children in the study had chosen whether to provide their infants withbreast milk. The researchers used the following designations. Group 1: mothersdeclined to provide breast milk; Group 2: mothers had chosen but were unable toprovide breast milk; Group 3: mothers had chosen and were able to provide breast milk.A hypothesis test is to be performed to decide if there is a difference in mean IQ amongthe three groups. Based on the methods studied in this class, what hypothesis test doyou think would fit the best? What would be the null hypothesis and what would be thealternative hypothesis? What are the assumptions for the test, and would you have anyconcerns about these assumptions.
14. A study was done to test the relationship between breast milk and a child’s subsequent
IQ. The researchers analyzed IQ data on 946 children at the age of 7 ½ to 8 years. The
mothers of the children in the study had chosen whether to provide their infants with
breast milk. The researchers used the following designations. Group 1: mothers
declined to provide breast milk; Group 2: mothers had chosen but were unable to
provide breast milk; Group 3: mothers had chosen and were able to provide breast milk.
A hypothesis test is to be performed to decide if there is a difference in
the three groups. Based on the methods studied in this class, what hypothesis test do
you think would fit the best? What would be the null hypothesis and what would be the
alternative hypothesis? What are the assumptions for the test, and would you have any
concerns about these assumptions.
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