Suppose that the starting monthly salaries of M.B.A.s at West University (WU) are
normally distributed with a mean of NT$32,000 and a standard deviation of NT$7,000.
The starting monthly salaries of M.B.A.s at the East University (EU) are normally
distributed with a mean of NT$30,000 and a standard deviation of NT$8,000. If a
random sample of 60 WU M.B.A.s and a random sample of 45 EU M.B.A.s are selected,
what is the probability that the sample mean of WU graduates will exceed that of the
EU graduates? (6%)
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