Hello! all the probabilities will add up to 1, so just subtract each of these to find 4.
1-0.1-0.5-0.1=0.3
4 had a probability of 0.3
The first part to question 8 is 2.25 and the answer to part b is 12
Answer:
D
Step-by-step explanation:
Mark me brainliest please :):)