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LekaFEV [45]
3 years ago
8

1/6x-4+x+3/2x+1/3=22

Mathematics
1 answer:
KIM [24]3 years ago
3 0

\dfrac{1}{6}x-4+x+\dfrac{3}{2}x+\dfrac{1}{3}=22\qquad|\text{multiply both sies by 6}\\\\6\cdot\dfrac{1}{6}x-6\cdot4+6\cdot x+6\cdot\dfrac{3}{2}x+6\cdot\dfrac{1}{3}=6\cdot22\\\\x-24+6x+3\cdot3x+2=132\\\\x-24+6x+9x+2=132\\\\(x+6x+9x)+(-24+2)=132\\\\16x-22=132\qquad|\text{add 22 to both sides}\\\\16x=154\qquad|\text{divide both sides by 16}\\\\x=\dfrac{154}{16}\\\\x=\dfrac{77}{8}

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Answer:

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Step-by-step explanation:

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This means that the null hypothesis is that the mean is of 22.1 months, that is:

H_0: \mu = 22.1

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Which of the following is the correct classification of the hypothesis test?

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Step-by-step explanation:

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