A study was performed on 200 elementary school students to investigate whether regular Vitamin A supplementation was effective in preventing colds during the month of March. Out of 100 students who received daily Vitamin A supplements during the month of March 15 had an experience of cold, and 25 had not experienced cold out of 100 students who didn’t receive Vitamin A during the same month. Test the hypothesis that taking Vitamin A and cold status in the population of elementary school students have an association. (Use α = 0.05 and show all the steps)

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