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Normal distribution with a mean

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Assume the speed of a bus on a certain road has an approximately normal distribution with a mean 55 mph and a standard deviation σ=10 mph. What is the probability that buses on this road will be going faster than 70 mph? Tip: Follow the same steps as in #2, but remember: P(z>a) = 1 - P(z<a) Show work.

Reference no: EM131936260

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