During registration at a university, 170 students took advantage of the online system to sign up for classes. sixty-two students took 20 minutes to register; 87 took 35 minutes to register; and, 21 students took 50 minutes to register. to the nearest minute, find and interpret the mean of the data. a) the amount of time a student spent online to register was about 48 minutes. b) the amount of time a student spent online to register was about 31 minutes. c) the amount of time a student spent online to register was exactly 35 minutes. d) the amount of time a student spent online to register was more than 42 minutes.