The probability of a mother giving birth to quardruplets is 1 in 729,000. An obstetrician checks the

Question:

The probability of a mother giving birth to quardruplets is 1 in 729,000. An obstetrician checks the records of 1,000,000 mothers, to see how many mothers of quadruplets are in her database.
a. Which is technically appropriate in this situation? What are e parameters?
b. Write a formula (using the in part a) for the probability that ere are exactly 3 mothers of quadruplets, but do not solve.
c. What is the expected number of mothers of quadruplets in this sample?
d. Which would be a good approximation to the part a? What is the parameter?
e. Approximate the probability in part b by using the approximate in part d, and solve. Distribution
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