(5 points) Problem #14. For each of the following situations, determine if it is descriptive or inferential. Situation Descriptive or Inferential? (a) A researcher is interested in the mean length of all Alfred Hitchcock movies so she determines the length of every Alfred Hitchcock movie that he made and determines the mean length is 117 minutes. (b) A researcher is interested in estimating the mean age of consumers who purchase items from the Home Shopping Network. Based on a random sample of 20 consumers, the researcher estimates that the mean age of all consumers is 27.2 years. (c) In a survey of 750 Americans conducted by the Gallup Organization, 24% of the sample indicated a belief in reincarnation. (d) Based on a sample, the Presidential Tracking Poll estimates that 61% of all Americans approve of President Biden's job performance. (e) An instructor is interested in the average age of all SRJC students so she asks every student in her class and determines the mean age is 24.7 years