The experiment with Joshua Bell showed the importance of ethos, so the statement is true.
According to ethos, a person's credibility and the degree of authority he has on a given subject are capable of attracting and convincing the public.
This is associated with what happened with Joshua Bell since by playing in a big theater, he gave credibility to the public. That's because the theater is known for presenting very good concerts.
So, if the audience trusts the theater, the audience trusts that Bell is a great musician and an expert on this subject.
However, the street is not a place that gives credibility to the artist, nor does it present him as an authority on the subject. For this reason, the public was not influenced to listen to Bell's music.
Learn more about ethos:
https://brainly.com/question/13118125
#SPJ1