Question

Elwin Osbourne, CIO at GFS, Inc., suspects that at least 25% of e-mail messages sent by GFS employees are not business related. A random sample of 300 e-mail messages was selected to test this hypothesis at the 0.01 level of significance. Fifty-four of the messages were not business related. The null hypothesis is ____.
a) b= 30
b) n= 300
c) p< 0.25
d) p≠0.25
e) p= 0.25

Answer

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