6. The weight of an offensive linesman may be 205.15 pounds, 210.23 pounds, 225.05 pounds or 219.14 pounds. What is this an illustration of? A) Continuous random variable B) Discrete random variable C) Complement rule D) All of the above 7. What is the median of a sample of electric bills for all-electric homes of similar sizes (to the nearest dollar): $212, $191, $176, $129, $106, $92. $108, $109. $103, $121, $175 and $194. A) $109 B) $115 C) $125 D) $230 8. Fifteen accounting majors had an average grade of 90 on a finance exam. Twenty marketing majors averaged 85, while fifteen finance majors averaged 93 on the same exam. What is the weighted mean (average) for all the 50 students taking the exam? A) 88.90 B) 89.84 C) 89.48 D) Impossible to determine without more information 9. For a distribution of sample means constructed by sampling 6 items from a population of 15. A) there will be 19 possible sample means B) there will be 1365 possible sample means C) there will be 3003 possible sample means D) there will be 5005 possible sample means E) there will be very large number of sample means 10. Suppose we select every fifth invoice in a file. What type of sampling is this? A) Random B) Cluster C) Stratified D) Systematic 11. The shape of any uniform probability distribution is A) Negatively skewed B) Positively skewed C) Rectangular D) Bell shaped