a-1. Ages of airline passengers:x=90, =43, 13 (Round your answer to 3 decimal places.) Answer is complete and correct. 3.615 -2. Is it an outlier? 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, =734, = 69 (Round your answer to 3 decimal places. Negative amount should be indicated by a minus sign.) Answer is complete but not entirely correct. 2.412 b-2. Is it an outlier? No, this is an unusual observation. No, this is not an outlier nor is it unusual. Yes, this is an outlier. -1. Condo rental vacancy days: x 20, -15, 0=9 (Round your answer to 3 decimal places.) Answer is complete but not entirely correct. 0.625