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1. Check your understanding 1 A. Determine the area of the indicated region under the standard normal curve. 1. to the left of z = 1.31 2. to the right of z = -1.92 3. to the left of z = -2 4. between z = 1.23 and z = 1.9 5. between z = -1.98 and z = -1,46 6. between z = -3 and z = 1.5 B. Given the random variable Z with a standard normal distribution, determine the following probabilities: 1. P (-0.75 -1.92) 3. P (2 0.2)