Question 1169990
z=(x-mean)/sd
the first will be z > 3/3.3 or z > 0.909 . That probability is 0.1817
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the second will be z < -6/3.3 and that probability is 0.0345
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the third is 0.3873. Calculator 2ndVARS 2 normalcdf(57,61,57,3.3)ENTER
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the last is z < -12/3.3 and probability is 0.0001