When Newborns Are Held So That Their Feet Just Barely

Multiple Choice

When newborns are held so that their feet just barely touch the floor, they will make instinctive walking and placing motions. This reflex disappears by about eight weeks. Researchers wanted to know if stimulating this behavior in infants during their first eight weeks of life would lead them to walk at an earlier age compared to infants who do not receive this stimulation. To test this they had twelve infants randomly assigned to two groups. Six infants received stimulation of the walking and placing reflex (active group) and six infants receive equal amounts of gross motor and social stimulation, but did not received stimulation of the walking and placing reflex (passive group) . The researchers then compared the infant's age (in months) when they first walked and the results are shown in the following figure.
-State the null and alternative hypotheses for this research question, where 1 = Active and 2 = Passive.

A) versus
B) versus
C) versus
D) versus
E) versus
F) versus