Exercises
1. The mean weight of all newborn babies in the US is 7 pounds with a standard deviation of 1.8 pounds. You
may assume that weights of newborn babies have a normal distribution. For this question draw a picture of
the model and label the standard deviation ruler.
(a) Estimate the probability that a randomly chosen baby has a weight between 3.4 and 10.6 pounds.
(b) Newborn babies who weigh too little at birth will need an incubator for some length of time. A hosp
iu
wants to make sure they have enough incubators to take care of the lightest 16% of babies. What weight
separates the bottom 16% from the rest?

43

step-by-step explanation:

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

i honestly dont know