Homework Help: Statistics

Posted by waqas on Wednesday, August 17, 2011 at 2:17pm.

A study shows that the probability of a baby being born with gene x is 0.6. The probability of a baby being born with gene y is 0.7.

(a)What is the probability of being born with both genes assuming that the probabilities are independent?

(b)In fact; 90% of those born with gene x also have gene y. Of those born with gene y; what proportion also have gene x?
(c)Comment on the relative sizes of the confidence intervals for P(x) and P(y).
(d)If p(x) comes from a sample of 140 and p(y) from a sample of 210 are the true population proportions statistically different? State your hypotheses clearly and show all workings.
(e)Assuming p(x) is known to be true, what sample size would be required to make P(y) distinguishable from P(x) at 95% confidence? Show your workings.

No one has answered this question yet.

Answer this Question

Related Questions

statistics - Ignoring twins and other mutiple births, assume babies born at a ...
statistics - Your best friend is 5 months pregnant and wants you to be there ...
statistics - The below table shows the probabilities generated by rolling one ...
Math - Assume that the probability is 1/2 that a baby born is a boy. If a couple...
Statistics - Suppose you conduct a study and find that the probability of having...
Statistics - Suppose you conduct a study and find that the probability of having...
Statistics - Construct the probability distribution for the value of a 2-card ...
Statistics - Construct the probability distribution for the value of a 2-card ...
statistics - Suppose that in a particular year the probability of a college ...
Math - In the United States, more male babies are born than female. In 2004, 2,...

For Further Reading

First Name:
School Subject:
Answer: