I need help!

Question

What is the likely range for the population proportion voting for Bernie Sanders, if 225 voters out of a sample of 947 voters say they are voting for Bernie Sanders? Remember to calculate the sample proportion and margin of error first. Remember how we round all numbers to a whole % (sample population, margin of error, and of course your final answer is already rounded). Give your answer as the low percent (with a % sign) followed by a dash (-), followed by the high percent (with a % sign).

Answer 1

225/947= 23.76%

p=.24

q=.76

np=mean=.24(947)=about 225

sd =sqrnpq= 13.14

CI= (212, 238)= (22%, 25%) for 68% confidence interval

(199, 252) = (21%, 27%) for 95% confidence interval