T and S share a digital music player that randomly selects songs to play.

Question

Together T and S have loaded 3476 songs.
T and S want to know if each have loaded a different proportion of songs.
When in random-selection mode, 22 of first 30 songs selected were loaded by S.
Let p denote proportion of songs loaded by S.
State the null and alternative hypotheses to be tested.

B) How strong is evidence that T and S have each loaded a different proportion of songs?