SOLUTION: You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You decide on the 95 percent confidence level and state that the estimated proportion mu

Algebra ->  Probability-and-statistics -> SOLUTION: You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You decide on the 95 percent confidence level and state that the estimated proportion mu      Log On


   

Question 468938: You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You decide on the 95 percent confidence level and state that the estimated proportion must be within 2 percent of the population proportion. A pilot survey reveals that 5 of the 50 sampled hold two or more jobs. How many in the workforce should be interviewed to meet your requirements?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You decide on the 95 percent confidence level and state that the estimated proportion must be within 2 percent of the population proportion. A pilot survey reveals that 5 of the 50 sampled hold two or more jobs. How many in the workforce should be interviewed to meet your requirements?
------
n = [z/E]^2 *pq
----
n = [1.96/0.02]^2*(1/10)(9/10)
----
n = 865 when rounded up
============================
Cheers,
Stan H.
----------------------------