A sports psychologist thinks that listening to music affects the length of athletes' workout sessions. The length of time (in minutes) of 10 athletes' workout sessions, while listening to music and while not listening to music, are shown in the table. Employ the sign test to determine whether, at 0.05 level of significance, there is significant difference in workout times.
Listening 45 38 28 39 41 47 62 54 33 44
Not listening 38 40 33 36 42 41 54 47 28 35