Is there any difference in customer satisfaction between East v West coasts? Two random samples of customers from the East and West coasts rated our services $($from $1=$ poor to $10=$ excellent$).$

The results are presented below.

$\backslash$table$[[,,,],[$Record$,$East Coast,West Coast,$],[2,7,6,7],[3,5,8,],[4,6,4,],[5,6,5,],[6,4,7,],[7,3,6,],[8,5,5,],[9,4,7,],[10,2,9,],[11,4,4,6]]$