The length of life of an instrument produced by a machine has a normal distribution with a mean of 9.4 months and a stan

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answerhappygod
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The length of life of an instrument produced by a machine has a normal distribution with a mean of 9.4 months and a stan

Post by answerhappygod »

a) 0.642
b) 0.4098
c) 0.16
d) 0.326
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