For x = 125, our z-score and probability is seen here
Z = 1
P(x < 1) = 0.841345
For x = 85, our z-score and probability is seen here
Z = -1
P(x < -1) = 0.158655
So what we want is the probability between these values:<br />
0.841345 - 0.158655 = 0.68269
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