Step-by-step explanation:
i think True
99% wrong 1% right
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Find half the length of the chord (from midpoint to the end point touching the circumference)
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20 ÷ 2 = 10 inches
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Formula
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a² + b² = c²
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Find the length of the segment
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10² + b² = 12²
b² = 12² - 10²
b² = 144 - 100
b² = 44
b = √44
b = 6.63 inches
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Answer: The length of the segment is 6.63 inches
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To let u know if it is either equal to or not
Answer:
At least 68% of observations lie between 22 and 26 months.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 24
Standard deviation = 2
22 = 24 - 2
22 is one standard deviation below the mean
26 = 24 + 2
26 is one standard deviation above the mean.
So, by the empirical rule, at least 68% of observations lie between 22 and 26 months.