Let x be a normal random variable with a mean of 20 and a standard deviation of 4. Find P(16 < X < 22). A) 0.4672 B) 0.5328 C) 0.1498 D) 0.0328
Added by Marina W.
Step 1
For X = 16, the z-score is (16 - 20) / 4 = -1. For X = 22, the z-score is (22 - 20) / 4 = 0.5. Show more…
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