(1 point) A poll is taken in which328 out of550 randomly selected voters indicated their preference for a certain candidate.

(a) Find a 90% confidence interval for p.

p

(b) Find the margin of error (i.e. (z-crit)*(std. dev.)) for this 90% confidence interval forp.

(c) Without doing any calculations, indicate whether the margin of error is larger or smaller or the same for an 80% confidence interval.

A.smaller

B.larger

C.same