A recent study of 188 students at a large dormitory cafeteria showed that 35% chose the vegetarian option as their meal plan. The head dormitory resident assistant (minoring in Statistics) reported to school administrators that it is more likely that the true proportion of students at the dormitory cafeteria who would choose the vegetarian option as their meal plan is between 29.28% and 40.72%. What level of confidence did the head dormitory resident assistant use to obtain the range of values reported to school administrators?

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A: Solution

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