Instructions: Answer each question, and when required explain your answer. Your explanation must be clear and complete. You may refer to your book, your notes and your homework papers. You may use a calculator.
  1. An experiment is run consisting of randomly picking a consonant and a vowel from the sentence "Math is fun!"
  2. Consider Problem 6, p. 687.
  3. Suppose a screening test for a certain virus is positive 99% of the time for infected people and 3% of the time for uninfected people. Also suppose that 0.5% of the population is infected.
  4. Problem 34a, p. 691.