4) what is the normal score of the att, lowest dits point in 9 dot set which has 27 values. 5) umbilical cord blood insilysis offer delivery is one way to measure the hellis of an infant offer Sirit- Based on a study, we can assume ther for a preterm intents, the pitt level of the arterial cord blood is normally distributed with mean of 7. 32 and a standard deviation oil . Find percent ope (2 decimal places ) of preterm infants who have arterial cord blood pit levels between fio and 7. 5