標題:
Finite Math Question
If Z is the standard normal random variable and Pr[k < Z < -1.34] = .0673, what is k? A.-2 B.-1.59 C.0.0673 D..9772 E.2
最佳解答:
Please read: Pr(k < Z < -1.34) = 0.0673 Pr(1.34 < Z < -k) = 0.0673 Pr(0 < Z < -k) - Pr(0 < Z < 1.34) = 0.0673 Pr(0 < Z < -k) - 0.4099 = 0.0673 Pr(0 < Z < -k) = 0.0673 + 0.4099 Pr(0 < Z < -k) = 0.4772 -k = 2.00 k = -2 The answer is A. 圖片參考:https://s.yimg.com/rk/HA00430218/o/201770806.gif
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發問:If Z is the standard normal random variable and Pr[k < Z < -1.34] = .0673, what is k? A.-2 B.-1.59 C.0.0673 D..9772 E.2
最佳解答:
Please read: Pr(k < Z < -1.34) = 0.0673 Pr(1.34 < Z < -k) = 0.0673 Pr(0 < Z < -k) - Pr(0 < Z < 1.34) = 0.0673 Pr(0 < Z < -k) - 0.4099 = 0.0673 Pr(0 < Z < -k) = 0.0673 + 0.4099 Pr(0 < Z < -k) = 0.4772 -k = 2.00 k = -2 The answer is A. 圖片參考:https://s.yimg.com/rk/HA00430218/o/201770806.gif
其他解答:
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