Question

Weights of newborn babies in a certain state have normal distribution with mean 5.33 lb and standard deviation 0.65 lb. A newborn weighing less than

4.85 lb is considered to be at risk, that is, has a higher mortality rate.

(a) A baby just born in this state is picked at random. The probability that

the baby is at risk is about

(a) 0.43

(b) 0.33

(c) 0.23

(d) 0.13

(e) 0.53

(b) The hospital wants to take pictures of the heaviest 10% of the newborn

babies. The minimum weight (in lbs) required for a picture to be taken is about

(a) 5.89

(c) 6.16

(c) 9.12

(d) 8.12

(e) 7.27

Answer 1