Recall that a previous example described a study investigating whether there is a relationship between use of night lights in a child's room before age 2 and the child's eyesight condition a few years later. Before, we presented a two-way table of counts from the study examining whether the child was nearsighted as the response variable: Observed Darkness Near light Room light Nearsighted 18 78 41 Not nearsighted 154 154 34 Total 172 232 75 The conditional proportions of nearsightedness in the three lighting groups are 0.105, 0.336, and 0.547, respectively, which suggest that the more light used in the child's room, the more likely the child is to become nearsighted. Now we know how to calculate a standardized statistic and estimate a p-value to measure the strength of evidence provided by these sample data for the conjecture that eyesight is associated with the type of lighting used in the child's room. participation activity 2.6.1: Question 1. State null and alternative hypotheses in terms of population proportions