Math 146 Online Summer 2018 Z?HAN JANG& | 7/11/18 10:30 PM Homework: Section 3.4
ID: 3348531 • Letter: M
Question
Math 146 Online Summer 2018 Z?HAN JANG& | 7/11/18 10:30 PM Homework: Section 3.4 Homework Score: 0 of 1 pt 3 of 14 (13 complete) HW Score: 64.29%, 9 of 14 pts 3.4.5 Help Suppose babies born after a gestation period of 32 to 35 gestation period of 40 weeks have a mean weight of 3000 grams and a standard deviation of 430 grams. If a 34-week gestation parlod baby weighs 2375 grams and a weeks have a mean weight of 2800 grams and a standard deviation of 600 grams while babies bom after a z-scores. Which baby weighs less relative to the gestation period? Round to two decimal places as needed.) O A. The baby bom in week 34 weighs relatively less since its z-score,is larger than the z-score of for the baby borm in weok 40. OB. The baby bom in week 40 weighs relatively less since its z-score,is smaller than the z-score of for the baby bom in wook 34 O C. The baby bon in week 40 weighs relatively less since its z-soore,. is larger than the z-soore of for the baby born in week 34. O D. The baby bom in weok 34 weighs relatively less since its z-score,is smaller than the 2-score of for the baby bom in wook 40. 10010 All parts showing MacBook ProExplanation / Answer
Z-score = (X-Mean)/(standard deviation)
For baby born in 34 weeks
Mean = 2800, standard deviation = 600
Z = (2375-2800)/600 = -0.71
For baby born in 40 weeks
Mean = 3000, standard deviation = 430
Z = (2575-3000)/430= -0.99
The correct answer is Option B
The baby born in week 40 weighs relatively less since its z-score [-0.99], is smaller than the z-score of [-0.71] for the baby born in week 34