In a professional exam with several hundred candidates the following summary scores were reported. Percentile Score 10% 220 25% 242 50% 263 75% 283 90% 300 An analysis assumed an approximate normal distribution with mean 261 and standard deviation 31. Is the normal assumption justifiable?

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A: given data  normal distribution percentage of scores above Z:1.04 = ?

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A: Mean()=80standard deviation()=5

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A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…