The Visiting Nurse Service of New York recently published a study describing the use of their health care service by COVID-19 patients receiving home health care (HHC). In a sample of 304 COVID-19 patients of age 80+ years receiving HHC through their service, the average number of days in HHC was 34 days and the standard deviation was 29 days. i. Calculate the variance of the number of days in HHC for COVID-19 patients of age 80+ years. ii. Calculate the standard error of the average number of days in HHC for COVID-19 patients of age 80+ years