[問題]統計
A hi-tech compant recruits employee by two separated tests with the same
quaified level of 60. An applicant may choose either A or B test to participate
. According to the historical data, the scores of the two tests are normally
distributed. The average and standard deviation of the scores for A test are
70 and 5; for B test, they are 68 and 8. If the degree of difficulty of A and
B tests are the same to you, which test would you choose to participate to
take advantage of experience of the historical data?
真的麻煩各位高手了，感激不盡...
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