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The Complete Idiot's Guide to Statistics, 2nd Edition by Robert Donnelly

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Chapter 11

1a.
812
1b.
813
1c.
814
P[-0.43 ≤ z ≤ +2.0] = P[z ≤ +2.0] - P[z ≤ -0.43],
P[-0.43 ≤ z ≤ +2.0] = 0.9772 - 0.3327 = 0.6445
 
2a.
815
2b.
816
2c.
P[-1.17 ≤ z ≤ -0.36] = P[z ≤ -0.36] - P[z ≤ -1.17]
P[z ≤ -0.36] = 1 - P[z ≤ +0.36] = 0.3599 ...

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