The length of human pregnancies from conception to birth varies according to a distribution that is approximately normal with a mean of 266 days and a standard deviation of 16 days. between what two values do the middle 95% of the lengths of all pregnancies fall?
a. between 218 and 314 days
b. between 234 and 298 days
c. between 202 and 330 days
d. between 250 and 282 days

[ 250 , 282 ]

Step-by-step explanation:

A Normal Distribution N ( 0,1)

We know one of the characteristics of a normal distribution is the symmetry and the fact that in the interval of

μ₀ - σ   and  μ₀ + σ   are found the 95.5 % of all values

In our case we have μ₀ = 266   and the standard deviation  σ = 16

So    μ₀ - σ     ⇒  266 - 16  = 250  the lowest value for the interval and

       μ₀ + σ     ⇒  266 + 16 = 282  the highest value for the interval

The interval  with 95.5 % of all values is

[ 250 , 282 ]

answer: sorry i can't you.

step-by-step explanation:

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all