Campus Life: Majors What percentage of your campus student body majors in business? Let p be the proportion of business majors on your campus.

(a) If no preliminary study is made to estimate p, how large a sample is needed to be 99% sure that a point estimate pˆ will be within a distance of 0.05 from p?

(b) Suppose that approximately 23% of college students major in business. Answer part (a)

using this estimate for p.

AppendixLO1