The table below presents distribution of students in a class of 40 according to their gender and age. 20 years old Male 8 21 years old 7 22 years ols 5 Female 5 8 7 20 13 15 12 40 222 20 Activity: Randomly selecting a student in this class Calculate the probability that 1. The selected student is a female 2. The selected student is 20 years old 3. The selected student is a female and 20 years old 4. The selected student is a male or 22 years old 5. The selected student is 21 years old or 22 years old 6. What is the marginal probability of selecting a male student? 7. What is the probability that the selected student is 21 years old and male