Say you have a sample of 1,000 mothers, and you know that the length of a woman's pregnancy is normally distributed, with a mean of 270 days and a standard deviation of 15 days. How many mothers will have their baby in the 10th month (that is, length of pregnancy above 300 days)?

2

25

50

100

Can't be determined

Question

Say you have a sample of 1,000 mothers, and you know that the length of a woman's pregnancy is normally distributed, with a mean of 270 days and a standard deviation of 15 days. How many mothers will have their baby in the 10th month (that is, length of pregnancy above 300 days)?

       2

       25

       50

       100

       Can't be determined

anonymous · Answer

100 i believe

anonymous · Answer

Considering the empirical rule, just by eyeballing it, is logically 100

perl · Answer

check out this graphical display http://rchsbowman.files.wordpress.com/2008/09/empirical-rule-4.jpg

perl · Answer

how many standard deviations are you above the mean

anonymous · Answer

25

anonymous · Answer

is the answer