The IELTS scores for International students were analyzed and stored in a file. Assuming that the...

The IELTS scores for International students were analyzed and stored in a file. Assuming that the scores are normally distributed and knowing that 15% of the mean scores were below 45 and 20% of the mean scores were above 75, show how you can determine their mean and standard deviation of the test scores for the students.(5 Points)

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orchestra answered 1 year ago

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