I want to know the answer & explanation

8. The following back-to-back stem-and-leaf diagram shows the IQ scores of the participants in an experiment. IQ scores of the participants in an experiment Girls Boys Leaf (1) Stem (10) Leaf (1) a b 9 9-76410 10 002578 63220 11 358 53 12 2449 2 13 3 (a) Write down the total number of participants. (b) It is given that the difference between the highest and the lowest IQ score is 35. Find the values of a and b if they are distinct. (c) What is the fraction of girl participants who get at least an IQ score of 110? (d) The top one-tenth of the participants will be invited to join the high-IQ society. The IQ score of Bella is 125. Will she be invited to join the high-IQ society? Explain briefly. (10 marks) irked