Use the accompanying list of eight names to complete parts (a) through (e) below.
(3,6), (5,7), (4,7), (7,15), (3,8), (7,9), (9,5), (4,11)
(a) Make a scatter diagram for the relation between the number of letters in each person's first and last name. Choose the correct graph below.
(b) Figure the correlation coefficient for the relation between the number of letters in each person's first and last name. (Round to two decimal places as needed.)