8(the rest of question) how many students memorized in three trials or less? a)2. b)19. c)24. d)81

One hundred students are shown an eight-digit number on a piece of cardboard for three seconds and asked then to recite the number from memory. The process is repeated until the student accurately recites the entire number from memory. The following histogram presents the number of trials it took each student to memorize the number. 35 30 20 AT 10