Re: [問題] 統計機率問題
以下為題目:
The probability density function of the length of a metal rod is
f(x) = 2 for 2.3 < x < 2.8 meters.
(a)
If the specifications for this process are from 2.25 to 2.75 meters, what
proportion of the bars fail to meet the specifications?
(b)
Assume that probability density function is f(x) = 2 for an interval of
length 0.5 meters. Over what value should the density be centered to
achieve the greatest proportion of bars within specifications ?
請教一下這一題統計機率問題該如何下手去解呢?謝謝唷^^
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