+ -/1 points TanFin12 8.4.032. My Notes + Ask Your Teach In a survey of 2541 adults aged 18 years and older, 58% of respondents claimed that it was easier to make friends in person, whereas 42% thought that it was easier to do so through social-networking sites. Assuming that these results apply to the entire adult population, what is the probability that at most 3 out of 6 adults chosen at random hold the opinion that it is easier to make friends through social-networking sites? (Round your answer to four decimal places.) + Show My Work (Optional) ? + -/1 points TanFin12 8.4.033. My Notes + Ask Your Teach A biology quiz consists of eight multiple-choice questions. Five must be answered correctly to receive a passing grade. If each question has five possible answers, of which only one is correct, what is the probability that a student who guesses at random on each question will pass the examination? (Round your answer to four decimal places.) # Show My Work (Optional) ? + -/1 points TanFin12 8.4.034.CMI. My Notes + Ask Your Teach It is estimated that one third of the general population has blood type A+. A sample of nine people is selected at random. (Round your answers to four decimal places.) (a) What is the probability that exactly four of them have blood type A+? (b) What is the probability that at most four of them have blood type A+