Finite Math standard random
For the standard random variable Z, what is the value of Pr[0.74 < Z < 1.27]?
A.-.1276
B..1276
C..2552
D..53
E..8980
1 個解答
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- 土扁Lv 76 年前最愛解答
The answer: B. 0.1276
Pr[0.74 < Z < 1.27]
= Pr[Z < 1.27] - Pr[Z < 0.74]
= 0.8980 - 0.7704
= 0.1276
Normal table used:
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