44. Students were surveyed on the number of visits to a Marc's Milk convenience store often, occa- sional, or never) and if the store was conveniently located to their school (yes or no). Convenience Store Visits Total Often 60 20 80 Occasional 35 60 5 50 Total 105 195 Yes No 25 Never 55 90 a. What is the probability that a student never visited the store? b. What is the probability that a student visited the store occasionally and found the store conve- niently located? c. What is the probability that a student visited the store often given that the student felt the store was conveniently located