SOLUTION: Figures from the Australian Bureau of Statistics and the Royal Alexandra Hospital
for Children indicate that weights of newborn babies are normally distributed with
a mean of 337
Algebra ->
Probability-and-statistics
-> SOLUTION: Figures from the Australian Bureau of Statistics and the Royal Alexandra Hospital
for Children indicate that weights of newborn babies are normally distributed with
a mean of 337
Log On
Question 733691: Figures from the Australian Bureau of Statistics and the Royal Alexandra Hospital
for Children indicate that weights of newborn babies are normally distributed with
a mean of 3370g and a standard deviation of 470g. Babies with birth weights less
than 2500g are considered at risk because the mortality rate for babies with low
birth weight is higher than the mortality rate for babies with greater birth weight.
(a) What proportion of babies have a birth weight less than 2500g and so are
considered to be at risk?
(b) What value would have to be assigned to the at risk birth weight if we wanted
to classify the bottom 5% of birth weights as indicating that the baby is at
risk due to low birth weight?
(c) If 25 newborn babies are selected at random, what is the probability that their
mean birth weight is greater than 3600g? Answer by lynnlo(4176) (Show Source):
(