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1+2
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Answer to a math question 1+2
Birdie
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1 + 2 = 3
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Math Question: Find the absolute extrema of the function f(x) = x^3 - 6x^2 + 9x + 2 on the interval [0, 4].
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Math question: Find the absolute extrema of the function f(x) = x^3 - 6x^2 + 9x - 2 on the closed interval [0, 4].
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The average weekly earnings in the leisure and hospitality industry group for a re‐ cent year was $273. A random sample of 40 workers showed weekly average ear‐ nings of $285 with the population standard deviation equal to 58. At the 0.05 level of significance can it be concluded that the mean differs from $273? Find a 95% con‐ fidence interval for the weekly earnings and show that it supports the results of the hypothesis test.
To paint a 250 m wall, a number of workers were employed. If the wall were 30 m longer, 9 more workers would be needed. How many were employed at the beginning?
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