[計量] 兩題問題 麻煩各位了
1. What is the nonnegative difference between the values of 3(k-2) and 3k-6?
a.0
b.2
c.4
d.6
e.It cannot be determined from the information given.
2.WINK, Inc. is made up of 450 employees who work a total of 13500 hours per
week. If the number of weekly work hours per person has a normal distribution
and the standard deviation equals 7 hours, how many employees work more than
37 hours per week?
(P.S.標準差問題一直是我的弱項 可能跟高中數學沒怎麼接觸有關
大學時實驗數據整理也是抄公式 按按計算機就解決了... 順便也求個速成法吧XD)
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09/22 10:14, , 1F
09/22 10:14, 1F
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09/22 10:17, , 2F
09/22 10:17, 2F
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09/22 10:34, , 3F
09/22 10:34, 3F
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09/22 11:14, , 4F
09/22 11:14, 4F
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09/22 11:59, , 5F
09/22 11:59, 5F
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09/22 12:00, , 6F
09/22 12:00, 6F
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09/22 12:01, , 7F
09/22 12:01, 7F
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09/22 20:32, , 8F
09/22 20:32, 8F
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