A data set follows a normal distribution. The mean of the data set is 56 and the standard deviation of the data set is 1.7. Find a z-score for a data value of 54 from the set. Round your answer to two decimal places.

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A: Given that                  A=60-1054-403-3502-425, λ=5

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A: trigonometry rule

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A: It's trigonometric question so I'm providing hand written solution for better understanding.

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A: