1. The recommended daily allowance of Vitamin A for children between 1-3 years of age is 400 micrograms (mcg). Vitamin A deficiency is linked to a number of adverse health outcomes, including poor eyesight, susceptibility to infection, and dry skin. The following are Vitamin A concentrations in children with and without poor eyesight, a history of infection, and dry skin.

With poor eyesight, a history of infection, and dry skin	270	420	180	345	390	430
Free of poor eyesight, a history of infection, and dry skin	450	500	395	380	430

Is there a significant difference in Vitamin A concentrations between children with and without poor eyesight, a history of infection, and dry skin? Run the appropriate test at a 5% level of significance.