statistics finite math mathematics?
The average resident of a certain East
Coast suburb spends 42 minutes per day commuting, with a
standard deviation of 12 minutes. Assume a normal distribution.
Find the percent of all residents of this suburb who have
the following commuting times.No more than 35 minutes per day
use the z
mean = 42
standard deviation = 12
z = (35 – 42)/12 = -.5833333…
area matching z-score is 28%
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