Gestation Period mean standard deviation
Under 28 weeks 1.88 1.2
28 to 31 weeks 4.08 1.85
32 to 35 weeks 5.71 1.47
36 weeks 6.44 1.19
37 to 39 weeks 7.31 1.09
40 weeks 7.69 1.04
41 weeks 7.79 1.08
42 weeks and over 7.61 1.11
During the gestation period of 28 weeks, what percent of the babies born within each gestation period have a low birth weight (under 5.5 lbs)?