A weight management program monitors the prevalence of obesity based on BMI among their participants. The following table organizes those participants by gender and age group. Prevalence is reported as a proportion of those monitored during year 1 of the program. Four random participants are chosen for weigh in each week. This week, a 29 year old man, a 37 year old woman, a 19 year old man, and a 67 year old man are chosen.

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