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- 单项选择题某职业病防治所对某厂石棉矿工进行了用力肺活量测定,测定的总人数为31人,其中11人已确诊为石棉肺患者,9人是可疑患者,另外11人是非患者。比较3组的平均用力肺活量发现:三个样本均数各不相同α=0.05,应与求得的统计量F值做比较的临界值是()
A、F(2,30),0.05
B、F(2,28),0.05
C、F(2,31),0.05
D、F(2,28),0.025
E、F(2,28),0.10
- B
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A、F(2,30),0.05
B、F(2,28),0.05
C、F(2,31),0.05
D、F(2,28),0.025
E、F(2,28),0.10
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