Convert each individual data value to a standardized z-score. a-1. Ages of airline passengers: x= 93, u = 44, a: 12 (Round your answer to 3 decimal places.) ::| 3-2. Is it an outlier? 0 Yes, this is an outlier. No, this is an unusual observation. No, this is not an outlier nor is it unusual. b-1. FICO credit scores: x= 552, [.1 = 723, 0= 73 (Round your answer to 3 decimal places. Negative amount should be indicated by a minus sign.) ::| c-1. Condo rental vacancy days: x = 26, M = 19, 0= 6 (Round your answer to 3 decimal places.) Z c-2. Is it an outlier? . No, this is not an outlier nor is it unusual. O Yes, this is an outlier. O No, this is an unusual observation