Answer the following questions. 27. Imagine data that is uniformly distributed. If the first quartile is 40 and the third quartile is 50, what is the height of the rectangle? 1 A) 10 L 20 i 40 i so 3) C} D) 28. Which of the following distributions are guaranteed to be symmetrical? A) Geometric B) Binomial C) 2 29. What distribution is guaranteed to have negative infinity as part of the sample space? A) Geometric B) Binomial C) Uniform D) Normal 30. Let's say that an instructor gave an exam to his students where the average was an 80 and the variance was 5. Let's say that this instructor wanted to curve the exam by multiplying scores by 0.9 and adding 8. What would happen to the variance? A) It would increase B) It would decrease C) It would stay the same