A study of a new type of vision screening test recruited a sample of 175 children age 3 to 7 years. The publication provides the following summary of the children’s ages: “Twelve patients (7%) were 3 years old; 33 (19%), 4 years old; 29 (17%), 5 years old; 69 (39%), 6 years old; and 32 (18%), 7 years old.”6 What is the median age in the study? Notice that you can easily add up the percents provided in

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