Using Chebyshev's Theorem, it is found that:
At least 75% of the exam scores fall between 76 and 92.
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- Chebyshev's Theorem states that the percentage of measures within k standard deviations of the mean is of at least
.
- With k = 2, that is, within 2 standard deviations of the mean:
- At least 75% of the measures are within 2 standard deviations of the mean.
84 - 2(4) = 76
84 + 2(4) = 92
- Thus, at least 75% of scores between 76 and 92.
A similar problem is given at brainly.com/question/23612895