Question

A
very mathematically oriented musician has read studies showing that
the average piece of popular music has 186.39 chord changes. The
musician examines a random sample of 40 of his favorite songs and
finds a mean of 172.12 chord changes with a standard deviation of
26.52. Perform the 4 steps of hypothesis testing (z test or t
test), an alpha of .05 and a two-tailed test.

Answer #1

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