# sample proportion

#### lilbitt

##### New Member
if a random sample size of 100 is selected from population p=.40, what is the value of p bar, or the sample proportion?

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#### elnaz

##### Guest
Hello
Excuse me ,while p bar has meaning that proportion in populatiuon is unknown , but in this question you have proportion in populatiuon , but with a simple proportion , you can find sample proportion :

x/100=40/100 => x=40 => sample proportion =x/100=.4

It was my answer , if others have another answer ,i will be glad to hear it.