Babies born after 40 weeks gestation have a mean length
Babies born after 40 weeks gestation have a mean length of 52.2 centimeters (about 20.6 inches). Babies born one month early have a mean length of 47.4 cm. Assume both standard deviations are 2.5 cm and the distributions are unimodal and symmetric. (Source: www.babycenter.com)
a. Find the standardized score (z-score), relative to all U.S. births, for a baby with a birth length of 45 cm.
b. Find the standardized score of a birth length of 45 cm for babies born one month early, using 47.4 as the mean.
c. For which group is a birth length of 45 cm more common? Explain what that means.
Membership TRY NOW
  • Access to 800,000+ Textbook Solutions
  • Ask any question from 24/7 available
    Tutors
  • Live Video Consultation with Tutors
  • 50,000+ Answers by Tutors
OR
Relevant Tutors available to help