corrected function calls in Cohort class
corrected function calls in Cohort class

 https://app.asana.com/0/202206849274532/206902611499173
 https://app.asana.com/0/202206849274532/206902611499174

kdilts/aaaa-capstone,kdilts/aaaa-capstone,deepdivedylan/aaaa-capstone,deepdivedylan/aaaa-capstone,deepdivedylan/aaaa-capstone,deepdivedylan/aaaa-capstone,kdilts/aaaa-capstone