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

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Sample size = n =36

Std error of sample =

50% would be within

=between 265.1 and 268.9

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6