SOLUTION: calculate commuting time is normally distributed with mean 45 mins per day, and standard deviation 10 minutes. what proportion of people spend less than 20 minutes commuting
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Question 804591: calculate commuting time is normally distributed with mean 45 mins per day, and standard deviation 10 minutes. what proportion of people spend less than 20 minutes commuting
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Commuting time is normally distributed with mean 45 mins per day, and standard deviation 10 minutes. What proportion of people spend less than 20 minutes commuting?
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z(20) = (20-45)/10 = -25/10 = -2.5
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p(x < 20 min ) = p(z < -2.5) = normalcdf(-100,-2.5) = 0.0062
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Cheers
Stan H.
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