题目内容

When an investigator wants to test whether a particular parameter is greater than a specific value, he null and alternative hypothesis are best defined as:

A. H_{0:θ＜θ_{0_{versus H_{a:θ＞θ_0.}}}}
B. H_{0:θ＞θ_{0_{versus H_{a:θ＜θ_0.}}}}
C. H_{0:θ＝θ_{0_{versus H_{a:θ≠θ_0.}}}}

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