Answer A - 25.12 square feet
Answer:
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Step-by-step explanation:
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Using the Empirical Rule, it is found that the mean is of 64 inches and the standard deviation is of 3.2 inches.
<h3>What does the Empirical Rule state?</h3>
It states that, for a normally distributed random variable:
- Approximately 68% of the measures are within 1 standard deviation of the mean.
- Approximately 95% of the measures are within 2 standard deviations of the mean.
- Approximately 99.7% of the measures are within 3 standard deviations of the mean.
The normal distribution is symmetric, hence the mean is given by:
M = (57.6 + 70.4)/2 = 64.
57.6 is two standard deviations below the mean, hence the standard deviation is found as follows:
57.6 = 64 - 2s.
2s = 6.4
s = 3.2.
More can be learned about the Empirical Rule at brainly.com/question/24537145
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Answer:y=-2x+3
Step-by-step explanation:
