The Mathematics test scores for BEKM students were analyzed and stored in a file. Assuming the...

The Mathematics test scores for BEKM students were analyzed and stored in a file. Assuming the scores are normally distributed. Knowing that 20% of the mean scores were above 70 and 15% of the mean scores were below 40, find their mean and standard deviation of the test scores for the students

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orchestra answered 1 year ago

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