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.

## Answer this Question

## Related Questions

- bio - The probability that their baby will be a carrier of the gene for PKU is (...
- statistics - Ignoring twins and other mutiple births, assume babies born at a ...
- Math - I am doing an assignment on probability. It sais.. "By the start of the ...
- statistics - Your best friend is 5 months pregnant and wants you to be there ...
- biology Please Help - The probability that their baby will be a carrier of the ...
- Statistics - A clinical trial tests a method designed to increase the ...
- statistics - A clinical trial tests a method designed to increase the ...
- Math - In the United States, more male babies are born than female. In 2004, 2,...
- Statistics - Construct the probability distribution for the value of a 2-card ...
- Statistics - Construct the probability distribution for the value of a 2-card ...

More Related Questions