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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