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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.
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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)

User Victoryoalli
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1 Answer

5 votes

Answer:

95.4%

Explanation:

Z(low)=-2 0.022750132

Z(upper)=2 0.977249868

User Musthafa
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3.6k points
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