4. A school gives an entry exam for admission. Suppose the score of this exam follows a normal distribution N(400, 60). This year, the school decides to admit students who score in the top 30%. Suppose a student scored 428 on the test. Will the student be admitted? Explain your reasoning. 5. An art museum organizes weekly jazz or classical concerts. The organizers are interested in knowing whether the audiences prefer jazz or classical music. After one jazz concert, the audience were asked to take an online survey to vote on whether they prefer jazz over classical. 55 participants take the survey, and 65% favored jazz. The organizers claim that 65% of all the regular concert audiences liked the music. Identify and briefly explain sampling bias (if any) in this scenario