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Mathematics 15 Online
OpenStudy (anonymous):

The heights of a large sample of pine trees are normally distributed with a mean of 40 feet and standard deviation of 7 ft. What percent of the trees are shorter than 54 ft?

OpenStudy (anonymous):

you just want answers, will be back shortly

OpenStudy (dumbcow):

P(Z<2) = 0.9772 look up in Z table 54 is 2 std deviations away from mean

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