Question 3 (2 + 4 = 6 marks) a A fast food company wants to determine the average number of times that fast food users visit fast food restaurants per week. They have decided that their estimate needs to be accurate within 0.2 of a visit, and they want to be 98% sure. Previous research has shown that the o =0.9 visits. What is the required sample size? B= 0.2 Sigma=0.9 Use formula 14 Here z= 2.326