Question 1198283
 Claim: 25% of people voted in cities, 45% voted in rural areas, and 30% voted overseas.
A most recent study of 100 persons:
35 of them voted in cities, 27 in rural areas, and 38 voted while overseas.
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Comparing Rural voting to see if there is validity to the differences. 
Ho: p = .45
Ha: p ≠  .45
two-sided.  Using 95% CI, the critical value = 1.96
 test statistic  is 
z = {{{z =blue (x - mu)/sqrt(blue(p(1-p)/n))}}}=  {{{z =blue ((.27-.45))/sqrt(blue(.45(.55)/100))}}} = -3.6181
|-3.6181| > 1.96 
Proceed to Use 'difference' comparison
Ho: {{{p[c] - p[s]}}} = 0
Ha:  {{{p[c] - p[s] }}}≠  0