Project #13802 - Statistics

 

1.      Among human pregnancies that go full term in the United States, the gestation period is approximately normal distributed with a mean ± standard deviation of 266±12 days. Given this information please respond to the following questions by using Z-tables, unless specify the usage of R.

 

 

A. What percentage of pregnant women would be “expected” to give birth within ± two weeks of the mean? (6 points)

 

 

B.  What is the probability that a pregnant women would deliver her baby more than 1 month (31 days) late. Please use calculation and Table (6 points) and R code (5 points) respectively?

 

 

C.  In a random sample of 10,000 women, how many would be predicted to fall within the category described in B? (5 points)

 

 

D.  Before which date are 90% of babies delivered? (6 points)

 

 

E.  Please use R code to answer D (5 points).-I only want the command- you do not have to have access to the R program at the moment.


 

Subject Mathematics
Due By (Pacific Time) 10/02/2013 08:00 pm
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