1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Proportion of Samples

  1. Oct 4, 2004 #1
    I hope someone can tell me where I am going wrong with this dang homework problem. There are several questions to this one problem, but once I figure this out, I will be able to figure the other parts of this question out.

    Approximately 5% of US Families have a net worth in excess of 1 million. A survery in the year 2000 found that 30 percent of Ford's employees were millionaires. If random samples of 100 Ford's employees had been taken that year what proportion of the samples would have been between 25% and 35%?

    Here I go:


    thus, .25-.30/(square root of) (.30)(.70)/100=-.05/.0458=-1.092





    I am lost here. Can someone help??
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted

Similar Discussions: Proportion of Samples