I Need help answering theses questions

Assignment 4.2: Applications of Probability (continued) c) Zoe and Alexa are gathering data about the different ways students travel to school. Out of 10 schools and 4000 students, they discovered that 3000 students walked. They concluded that 75% of students walk to school. (2 marks) d) Chase hears about Zoe and Alexa's study and thinks the results are wrong. Chase asked his two best friends how they got to school, and they both said they biked. As Chase bikes too, he thinks that the percentage of people who walk to school should be lower. (2 marks) 7. Claire is trying to find a match for her pink sock. She knows there are 30 socks in her sock drawer. Thirteen socks are pink, 10 socks are black, and 7 socks are white. (4 marks) a) What is the theoretical probability that Claire will select a pink sock (without looking) on her first try? (1 mark) b) After six tries, Claire finally selects a pink sock. What is the experimental probability of selecting a pink sock in this case? Notice that in this experiment only six socks were drawn, with one of them being the correct colour. (1 mark) c) Claire selects a pink sock after four tries. What is the experimental probability of selecting a pink sock in this case? (1 mark) d) What is the theoretical probability of Claire selecting a white sock? (1 mark) continued 73 Module 4: Probability