试题与答案

In order to test whether the mean IQ of em

题型:单项选择题

题目:

In order to test whether the mean IQ of employees in an organization is greater than 100, a sample of 30 employees is taken and the sample value of the computed test statistic, tn-1=3.4. The null and alternative hypotheses are:()

A. H0:μ=100; Ha:μ≠100.

B. H0:μ≤100; Ha:μ>100.

C. H0:μ=100; Ha:X≠100.

答案:

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