# Question

The American College of Obstetricians and Gynecologists reports that 32% of all births in the United States take place by Caesarian section each year. (National Vital Statistics Reports, Mar. 2010).

a. In a random sample of 1,000 births, how many, on average, will take place by Caesarian section?

b. What is the standard deviation of the number of Caesarian section births in a sample of 1,000 births?

c. Use your answers to parts a and b to form an interval that is likely to contain the number of Caesarian section births in a sample of 1,000 births.

a. In a random sample of 1,000 births, how many, on average, will take place by Caesarian section?

b. What is the standard deviation of the number of Caesarian section births in a sample of 1,000 births?

c. Use your answers to parts a and b to form an interval that is likely to contain the number of Caesarian section births in a sample of 1,000 births.

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