28. How do I solve for this? Thank you.

Section Magiting is one of the best performing section classes in Gilas Pilipinas High School. To evaluate the collective performance of the students. Teacher Mabeauty gave a 100-item written test. The plot below illustrates the stem-and-leaf display of the scores of the students in the test. Which of the following statements is nottrue? O a. The range of the test scores is equal to 49. O b. There are 14 students in Section Magiting who scored higher than 60. O (2. Four out of the 30 students failed the exam. 0 d. The mean score ofthe students in the exam is 63. 38