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Proportion of the vehicles

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Assume the speed of vehicles along a stretch of I-10 has an approximately normal distribution with a mean of 71 mph and a standard deviation of 8 mph. What proportion of the vehicles would be going less than 50 mph?

Reference no: EM13944052

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Proportion of the vehicles : Assume the speed of vehicles along a stretch of I-10 has an approximately normal distribution with a mean of 71 mph and a standard deviation of 8 mph. What proportion of the vehicles would be going less than 50 mph?
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