Use the sign test to test the indicated claim.
A researcher wishes to study whether music has any effect on the ability to memorize information. 82 randomly selected adults are given a memory test in a quiet room. They are then given a second memory test while listening to classical music. 70 people received a higher score on the second test, 11 a lower score, and 1 received the same score. At the 0.05 significance level, test the claim that the music has no effect on the memorization skills.