medium · SAT Math
A clinic tested 300 patients for a virus and classified each patient by age group and test result. Every patient received exactly one result. Positive Negative Total Under 40 16 144 160 40 and older 30 110 140 Total 46 254 300 A patient is selected at random from those Under 40 only. What is the probability that this patient tested Positive?
- 4/75
- 1/10
- 3/16
- 8/23
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