Respuesta :
Answer:
0.8665 percentile.
Step-by-step explanation:
Given: length of new born baby girl= 47 cm.
Mean= 49.2 cm
Standard deviation= 1.8 cm
Lets "x" represent the length of new born baby girl´s length.
First finding the z-score
we know, z-score= [tex]\frac{x-mean}{standard\ deviation}[/tex]
z-score= [tex]\frac{47-49}{1.8} = \frac{-2}{1.8}[/tex]
∴ z-score= -1.11
Now using z-score table to find the percentile rank of baby girl.
Hence, we find that it is [tex]1-0.1335= 0.8665[/tex] percentile rank of baby girl whoes length is 47 centimeter.
