0
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]]>0: μ = 75.6 versus H_{a}: µ < 75.6 a “one-sided” test?
]]>0 is only in one direction.
]]>a is one-directional.
]]>a is two-directional.
]]>a to test the research question, "Was the mean greater than 3?"
]]>0: µ = 3 versus H_{a}: µ > 3 a "one-sided" test?
]]>0 is only in one direction.
]]>a is one-directional.
]]>a is two-directional.
]]>a to test the research question, "Has the mean changed from 11.50?"
]]>0: μ = 11.50 versus H_{a}: µ \( \neq \) 11.50 a “two-sided” test?
]]>0 can be in either direction.
]]>a are one-directional.
]]>a is two-directional.
]]>0 or H_{a}.
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