The lengths of pregnancies in a small rural village are normally distributed with a mean of 267 days and a standard deviation of 17 days. in what range would you expect to find the middle 50% of most pregnancies? between and . if you were to draw samples of size 36 from this population, in what range would you expect to find the middle 50% of most averages for the lengths of pregnancies in the sample? between and . enter your answers as numbers. your answers should be accurate to 1 decimal places.

Step-by-step explanation:

Given that the lengths of pregnancies in a small rural village are normally distributed with a mean of 267 days and a standard deviation of 17 days.

X is N(267,17) where x = length of pregnancies in days

For middle 50% we must have on either side 25% area

Hence z= ±0.675

Corresponding x score would be

---

Sample size = n =36

Std error of sample =

50% would be within

=between 265.1 and 268.9

hbfhv.hjgfskhgfdbmx n

step-by-step explanation:

9-15%

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.