Question 3 (2 points) (04.02 MC) A survey on social media was given to students at a university, The results showed that 70% of its students had accounts on Instagram. Of the students who had accounts on Instagram, 50% had accounts on Facebook whereas 40% of students who did not have accounts on Instagram had accounts on Facebook. What is the probability that a student does NOT have a Facebook account? (2 points) O a 0.50 Ob 0.35 O c 0.53 Od 0.18 O e 0.47 Question 4 (2 points) (04.02 MC) Some researchers claim there is an association between getting a tattoo and contracting hepatitis C. They took a random sample of people living in Los Angeles, California, and recorded whether they had a tattoo and whether they were infected with hepatitis C. The results are shown in the following two-way table: Has Hepatitis C Does Not Have Hepatitis C Does not have a tattoo 50 Has one tattoo 10 210 Has more than one tattoo 15 150 If a person is chosen at random, what is the probability that he or she has hepatitis C, given that he or she has one tattoo? (2 points) a 0.045 Ob 0.333 OC 0.05 Od 0.50 O e 0.023