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3 years ago

5

At an intersection, the red light times are normally distributed with a mean time of 3 minutes and a standard deviation of 0.25

minutes. Approximately what percent of red lights last between 2.5 and 3.5 minutes? (2 points)

1 answer:

VladimirAG [237]3 years ago

3 0

Answer:

95.4%

Step-by-step explanation:

Z(low)=-2 0.022750132

Z(upper)=2 0.977249868

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