You may need to use the appropriateappendix tableortechnologyto answer this question.In developing patient appointment schedules, a medical center wants to estimate the mean time that a staff member spends with each patient. Use a planning value for the population standard deviation ofsevenminutes.(Round your answers up to the nearest integer.)How large a sample should be taken if the desired margin of error istwominutesat a 95% level of confidence? How large a sample should be taken for a 99% level of confidence?