From a sample with n=32, the mean duration of a geyser's eruption is 3.81 minutes and the standard deviation is 1.07 minutes. Us
1 answer:
Notice that
This means you are looking for
Chebyshev's theorem states that for any constant
,
which means
In other words, at least 75% of the geysers will have eruptions lasting between 1.67 and 5.95 minutes. Out of 32 geysers, then, one can expect at least 24 of them to have eruptions with between these durations.
This means you are looking for
Chebyshev's theorem states that for any constant
which means
In other words, at least 75% of the geysers will have eruptions lasting between 1.67 and 5.95 minutes. Out of 32 geysers, then, one can expect at least 24 of them to have eruptions with between these durations.
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We are given
△ABC, m∠A=60° m∠C=45°, AB=8
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m∠A+ m∠B+m∠C=180
we can plug values
60°+ m∠B+45°=180
m∠B=75°
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we can use law of sines
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Calculation of AC:
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Area:
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...............Answer