SOLUTION: how many young adults should be interviewed to estimate the proportion of the young adult population who earn less than $15000 to within .03 with 90 perfent confindence?

Question 1105710: how many young adults should be interviewed to estimate the proportion of the young adult population who earn less than $15000 to within .03 with 90 perfent confindence?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
how many young adults should be interviewed to estimate the proportion of the young adult population who earn less than $15000 to within .03 with 90 percent confindence?
---------------------
n = [z*s/E]^2
-----
n = [1.645*s/0.03]^2
----
Note:: You need the standard deviation to determine "n".
Note:: n must be rounded up to the next whole number
-------------
Cheers,
Stan H.
------------
RELATED QUESTIONS
A music industry researcher wants to estimate, with a 90% confidence level, the... (answered by stanbon)

A music industry researcher wants to estimate, with a 90% confidence level, the... (answered by Boreal)

A music industry researcher wants to estimate, with a 95% confidence level, the... (answered by Boreal)

A magazine for young business executives plans to determine the mean annual income of its (answered by ewatrrr)

How many ways can you arrange 3 young, 4 teen, and 5 adult sit around the swimming pool,... (answered by Boreal)

A researcher wishes to estimate with 99% confidence, the population proportion of adults... (answered by Theo)

About 69% of young adult Internet users (ages 18 to 29) use social-networking sites.... (answered by Boreal)

A sample of 18 young adult men (20-30 years old) was sampled from a normal population.... (answered by psbhowmick)

You plan to conduct a survey to find what proportion of the workforce has two or more... (answered by stanbon)