A group of students in the Business Department will conduct a study of the average waste generated by every household in Gotham City each month. On In this study, a group of students gave a tolerance of 150 kg to the total average food waste with a 92% confidence level. Information obtained from the mayor Gotham is known that the standard deviation of the waste generated from all households is 1.3 Tons To properly estimate, how many households should surveyed by a group of students?