The Andrew Jergens Company markets a "spa tablet" called ActiBath, which is a carbonated moisturizing treatment for use in a bath. From previous research, Jergens management knows that 60% of all women use some form of skin moisturizer and 30% believe their skin is their most beautiful asset. There is some concern among management that women will associate the drying aspects of taking a bath with ActiBath and not believe that it can provide a skin moisturizing benefit. Determine the size of the sample that will be needed in ActiBath survey