Mathematics, 11.05.2021 19:10 rockstargirl9245
The duration of routine operations at Chicago General Hospital has approximately a normal distribution with an average of 130 minutes and a standard deviation of 12 minutes. What proportion of operations lasted between 90 and 135 minutes?
A) 0.85
B) 0.79
C) 0.80
D) 0.66
Answers: 3
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