Question Completion Status: QUESTION 6 A quality control specialist compares the output from a pump with a new lubricant to the output of pumps with the old lubricant and found a 72% improvement. a) Determine whether the study is an experimental or an observational study. b) Identify the sample and the population. c) is the value 72% a statistic or a parameter? d) Identify any one major problem with that study. TTT Arial 3 (12pt) T Path: p Click Save and Submit to save and submit. Click Save All Answers to save all answers. QIX Words:0 8 points Save An Save All Answers Save a Path: p QUESTION 7 Find the indicated probabilities. Express your answer as a simplified fraction or decimal. The table below shows the soft drinks preferences of people in three age groups. under 21 years of age between 21 and 40 cola root beer lemon-lime ງ 40 25 20 35 20 30 over 40 years of age 20 30 35 a) Words If one of the 255 subjects is randomly selected, find the probability that the person is between 21 and 40 or drinks root beer. b) If one of the 255 subjects is randomly selected, find the probability that the person drinks cola given that they are over 40, 16 points