Question 24
A market researcher recorded numbers of customers patronizing car service shops within a week. Kentucky: $y^2+3y+1$; Geoffrey: $2y+3$; Sylvester: $6y+3$; Jessy: $3y$; Vincent: $2y+6$. The mean is 14 and y is a positive integer. Find the first quantile Q1, third quantile Q3, median M and range R. Give $(Q1,Q3,M,R)$.
