Elwin Osbourne, CIO at GFS, Inc $\textbf{ not }$

Multiple Choice

Elwin Osbourne, CIO at GFS, Inc., suspects that at least 25% of email messages sent by GFS employees are $\textbf{ not }$ business related. A random sample of 300 email messages was selected to test this hypothesis at the 0.01 level of significance. Fifty-four of the messages were $\textbf{ not }$ business related. The null hypothesis is ____.

A) \mu = 0.25
B) n = 300
C) π < 0.25
D) π ≠ 0.25
E) π = 0.25