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9. Suppose hourly salary of casual staff in a company is normally distributed with a mean of $35 and a standard deviation of $10. What

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9. Suppose hourly salary of casual staff in a company is normally distributed with a mean of $35 and a standard deviation of $10. What is the z-score of an hourly salary of $50? [Answer and show workings here] 10. Refer to the previous question. What is the proportion of casual staff with the hourly salary of more than $50? [Answer and show workings here)

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