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Solution: Find the two values at which must lie at least 75% of the data

Find the two values at which must lie at least 75% of the data

Problem Statement:

The mean score of the students is 65.3 and the standard deviation of 20.15. Find the two values at which must lie at least 75% of the data.

Problem Answer:

75% of the data lie between 25 and 105.6.

Solution:

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