The area under the normal curve between the 20^th and 70^th percentiles is equal to: A)0.7000. B)0.5000. C) 0.9193. Logically, this must be .70 - .20 = .50, as you can verify from Appendix

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The area between the 20th and 70th percentiles under a normal curve is equal to 0.5000 as per the normal distribution table (Appendix in the question).

The Area Under the Normal Curve Between the 20th and 70th

The Area Under the Normal Curve Between the 20^th and 70^th