Thursday

November 20, 2014

November 20, 2014

Posted by **sammy** on Saturday, June 21, 2008 at 5:26pm.

how do i work this problem?

- statistics -
**MathGuru**, Saturday, June 21, 2008 at 7:47pmTry this formula:

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

= [(2.33)^2 * .397 * .603]/.035^2

I'll let you finish the calculation.

Note: n = sample size needed; .397 (which is approximately 278/700 in decimal form) for p and .603 (which is 1 - p) for q. E = maximum error, which is .035 (3.5%) in the problem. Z-value is found using a z-table (for 98%, the value is approximately 2.33). Symbols: * means to multiply and ^2 means squared.

I hope this will help.

- statistics -
**asdf**, Wednesday, October 22, 2014 at 7:59pmasdf

**Answer this Question**

**Related Questions**

College Statistics 2 - I saw that this was already answered but I can't find it ...

Statistics - A recent Gallup Poll dealt with the proportion of Canadians who ...

statistics - According to a Harris Interactive poll conducted in 2009, 20% of ...

Math - a poll found that a particular group of people read and average or 18.3 ...

Basic Statistics - Historically, the proportion of adults over the age of 24 ...

statistics - An economist wants to estimate the mean income for the first year ...

macroeconomic - Secondhand smoke globally kills more than 600,000 people each ...

Statistics - A recent survey of students on the question “Do you think the ...

Government - 1) The portion of the population selected to participate in a poll ...

Statistics - In a Gallup poll of 1,038 adults, 540 saud that second-hand smoke ...