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?

32%

68%

95%

99.7%

Question

Eden Friedman

30 August, 00:05

+5

Answers (1)

Know the Answer?

Lia Cannon · Answer 1

The answer is 95% from calculation

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?32%68%95%99.7%