Posted by **Edward** on Sunday, April 29, 2007 at 4:24pm.

How do I go about tackling this problem?

The American Medical Association wishes to determine the percentage of obstetricians who are considering leaving the profession becaose of the rapidly increasing number of lawsuits against obstetricians. How large a sample should be taken to find the answer to within + or = 3% at the 95% confidence level?

Try this formula:

n = [(z-value)^2 * p * q]/E^2

Note: I'm using * to mean multiply.

With your values:

= [(1.96)^2 * .5 * .5]/.03^2

Note: Round to the next highest whole number.

Information: n = sample size needed; .5 for p and .5 for q are used if no value is stated in the problem. E = maximum error, which is .03 (3%) in the problem. Z-value is found using a z-table (for 95%, the value is 1.96).

I hope this will help.

- Math (Statistics) -
**3434**, Thursday, January 14, 2016 at 10:28pm
323e

## Answer This Question

## Related Questions

- Math (typo in first) - How do I go about tackling this problem? (I made a ...
- Statistics - Can you please help with this question. The only thing that I have ...
- Microeconomics - Medical doctors earn higher incomes than people who have a Ph. ...
- Microeconomics - Medical doctors earn higher incomes than people who have a Ph....
- Statistics - Many states are carefully considering steps that would help them ...
- statistics - many states are considering steps that would help them collect ...
- American Government - Which of the following interest groups is considered to ...
- Statistics - The American Veterinary Association claims that the annual cost of ...
- law - A/an __________ is an occupation requiring knowledge of the arts or ...
- Anthropology - why do you think that members of a professional academic ...

More Related Questions