Question 472922
n=750, p=260/750=.347, q=.653
(a,b)=p+z[alpha/2]*sqrt((p*q)/n)
=.347+-(1.96)*sqrt((.347*.653)/750) Z for the 95% confidence level is 1.96
=.347+-(1.96)(.0174)
=.347+-.034
=(.381, .313)
.
Ed