minedlamini51 minedlamini51 23-08-2022 Mathematics contestada 1. The following marks are the test 1 marks for 10 randomly selected STA100 students: 67, 34, 98, 78, 76, 52, 80, 49, 91, 66. What is the mean mark for this sample? a. 69.1 b. 69.4 c. 62.2 d. 70.3 e. 71.5