Suppose that 27% of all births in a certain region take place by Caesarian section each year. 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.
a. On average, out of 1,000 births will take place by Caesarian section. (Round to the nearest whole number as needed.)
b. The standard deviation in a sample of 1,000 births is . (Round to two decimal places as needed.)
c. The number of Caesarian section births is 95% likely to be in the interval ( , ) using the empirical rule. (Round to one decimal place as needed.)