The following data lists the number of correct and wrong dosage amounts calculated by 32 physicians. In a research experiment, a group of 15 physicians was given bottles of epinephrine labeled with a concentration of "1 milligram in 1 milliliter solution," and another group of 17 physicians was given bottles labeled with a ratio of "1 milliliter of a 1:1000 solution." Complete parts (a) through (c) below. Concentration Label ("1 milligram in 1 milliliter solution") Ratio Label ("1 milliliter of a 1:1000 solution") Correct Dosage Calculation Wrong Dosage Calculation 11 3 4 14 a. For the physicians given the bottles labeled with a concentration, find the percentage of correct dosage calculations, and then express it as a probability. The probability of a correct dosage calculation given the bottle is labeled with a concentration is (Round to three decimal places as needed.) The table below summarizes results from a study of people who refused to answer survey questions. If one of the subjects is randomly selected, what is the probability that the selected person refused to answer? Does the probability value suggest that refusals are a problem for pollsters? Age 18-21 22-29 30-39 40-49 50-59 60 and over Responded 78 Refused 15 8055 260 250 141 143 207 24 37 30 39 61 The probability that a randomly selected person refused to answer is (Do not round until the final answer. Then round to three decimal places as needed.)