Friday

November 28, 2014

November 28, 2014

Posted by **Theresa** on Wednesday, October 6, 2010 at 6:57pm.

- Statistics -
**MathGuru**, Wednesday, October 6, 2010 at 7:37pmTry this formula:

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

= [(1.96)^2 * .5 * .5]/.04^2

I'll let you finish the calculation. Round to the next highest whole number.

Note: 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 .04 (4%) in the problem. Z-value is found using a z-table (for 95%, the value is 1.96).

**Answer this Question**

**Related Questions**

Statistics - How many students must we sample if we want to be within 4% of the ...

statistics - How many students must we sample if we want to be within 4% of the ...

Bus 221, Devry - How many students must we sample if we want to be within 4% of ...

college - How many students must we sample if we want to be within 4% of the ...

stats - How many students must we sample if we want to be within 4% of the true ...

Math Statistics - 5. Students in an introductory statistics class were asked to ...

Statistics - A confidence interval was used to estimate the proportion of ...

Statistics - An investigator wants to estimate caffeine consumption in high ...

Math Statistics - Students enrolled in an introductory statistics course at a ...

STATISTICS - Suppose that, in order to estimate the proportion of students who ...