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The following table and graph display the data from this study. 100% Darkness Night Room TOTALS light light 90% 80% Far-sighted 40 39 12 91 70% 60% Far-sighted Normal 114 115 22 251 50% Normal refraction refraction Near-sighted 40% Near- 18 78 41 137 30% sighted 20% TOTALS 172 232 75 10% 479 0% Darkness Night light Room light e. What does the data suggest about the association between near-sightedness and higher levels of light exposure? Support your answer using conditional percentages. f. Is it valid to conclude that sleeping in a lit room or with a night light causes an increase in a child's risk of near-sightedness? Why or why not? g. Identify at least one confounding variable. Explain how this variable might be responsible for the association we see between the explanatory variable and the response variable in this study