Test the normality of the following phone call durations (in seconds), then replace each x value...

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Test the normality of the following phone call durations (inseconds), then replace each x value with log (x + 1) and test thenormality of the transformed values. What does it concludes?

31.5, 75.9, 31.8, 87.4, 54.1, 72.2, 138.1, 47.9, 210.6, 127.7,160.8, 51.9, 57.4, 130.3, 21.3, 403.4, 75.9, 93.7, 454.9, 55.1

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