Two expert wine tasters were asked to rank six brands of wine. Their rankings are shown in the table below.

a. Use the rankings to compute rs.

b. Do the data present sufficient evidence to indicate a positive correlation in the rankings of the two experts? Test using a = .05.

Brand ______ Expert 1 ________ Expert 2

A .................... 6 .................... 5

B..................... 5 .................... 6

C .................... 1 .................... 2

D .................... 3 .................... 1

E .................... 2 .................... 4

F .................... 4 .................... 3