(4 points) An automobile dealer has taken a survey of 500 drivers. The drivers w

Question

(4 points) An automobile dealer has taken a survey of 500 drivers. The drivers were classified as Young (ages 16-30) and Old (ages 31 or older), and according to their vehicle preference (SUV or Compact). The results of the survey are summarized in the 6. following table: Vehicle Preference SUV 200 150 Compact Total 80 70 150 Young 280 220 500 Age Total Based on this data, which conclusion is accurate? Circle your answer A) Among the drivers who prefer compacts, more than 50% are old B) 80% of the young drivers prefer compacts. C) The data indicate that age and vehicle preference are independent. 80% of the drivers are young and prefer compact cars. E) The data indicate that age and vehicle preference are not independent. 7 (6 points) A study conducted at a certain college of science shows that 69% of their graduates find a job in their chosen field within a year after graduation. a) Find the probability that 7 randomly selected graduates all find jobs in their chosen field within a year of graduating. Find the probability that 7 randomly selected graduates none finds a job in his/her chosen field within a year of graduating. b) Find the probability that 7 randomly selected graduates at least one finds a job in his/her chosen field within a year of graduating. c)

Explanation / Answer

6) a) Inaccurate b) Inaccurate c) Accurate d) Inaccurate e) Inaccurate 7) a) 7 randomly all find jobs Probability of finding job 0.69 Therefore 7 randomly all find jobs 0.074464 b) 7 randomly none find jobs Probability of not finding job 0.31 Therefore 7 randomly none find jobs 0.000275 c) Out of 7 atleast one find job (1-none find job) 0.999725

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