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In a large lecture Physics class, the grades on the final exam follow a normal distribution. The mean grade on the exam was a 68,

In a large lecture Physics class, the grades on the final exam follow a normal distribution. The mean grade on the exam was a 68, and the standard deviation was 8.6 points. If Carla's test grade was a 59, what is the z-score for her grade? Round your answer to 2 decimal places

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