Question

A sample of 200 college undergraduates was collected and the student's gender and method of getting to class that day were collected. The data appears below. What is the probability that a randomly selected student is either male or drove to class?

Gender                Drive     Bike       Walk      Total

Male 95           10           10           115

Female                 65           5              15           85

Total 160         15           25           200

Answer 1

Ars : p/ male or drove to class) = p (male) + P(drove to class} - (P( male and I drove to class) P (male) = 115/200 P(drove to class) = 160/200 Plmale and dme to clas) - 95/200

plave a drove to clas) 160 = 180o = 0.90 180 200