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[单选题]

A sample of 438 observations is randomly selected from a population. The mean of the sample is 382 and the standard deviation is 14. Based on Chebyshev's inequality, the endpoints of the interval that must contain at least 88.89% of the observations are closest to:

A.340 and 424.

B.354 and 410

C.396 and 480

参考答案与解析：

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