Polydac more extra fingers or toes. A young obstetrician has collected data for
ID: 3047985 • Letter: P
Question
Polydac more extra fingers or toes. A young obstetrician has collected data for the past five years of the babics sho has delivered, and reportod whcthcr or not this abnormality was prosent and the gender of the newborn. Use this information to answer the next two questions. tyly is a fairly common congenital abnormality in which a haby is born with one or Polydactyly Gender Yes No Tota Male 15 940 955 Femal 10 897 907 Total 25 1837 1862 9. What is the probability that a randomly selected newborn child will have polydactyly? a. 15/25 b. 25/1862 c. 15/1862 d. 15/955 e. None of the above 10. Is a new born being male independent of having the polydactyly? a. No, bo cause P(newborn male l polydactyly present) P(polydactyly proscnt). b. Yes, because P(newborn male l polydactyly present) = P(polydactyly present). No, bo cause P(newborn male polydactyly prosent)P(newborn male). d. Yes, because P(newborn male I polydactyly present) -P(newborn male) e. None of the above.Explanation / Answer
Ans:
9)number of persons having polydactyly=25
Total persons=1862
P(polydactyly)=P(male and polydactyly)+P(female and polyfdactyly)
=(15/1862)+(10/1862)=25/1862
10)
P(male/polydactyly)=P(male and polydactyly)/P(polydactyly)
=(15/1862)/(25/1862)=15/25=0.6
P(male)=955/1862=0.513
Both are not equal,so,option C is correct.