Statistics question

I just had a test and the question was along the lines of, "Assume that the people in Kansas voted that 67% are not okay with smoking in public places. In a SRS of 500 people, 325 said they were not okay, what is the proportion probability of the SRS?" The wording may be off but the numbers are accurate and I needed to find the probability.

What I did, but not total sure it is right was I divided 325 by 500 to get .65. I took the square root of .67(1-.67) which would give me the st. dev. Finally I subtracted .65-.67 and divided it by the st. dev. I used that number which gave me the z score and found what the zscore was equal to. Then I subtracted that number from 1. Does this sound correct?
Anonymous User
Anonymous User
Asked Apr 25, 2013

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