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Talja [164]
3 years ago
6

If you rearrange the equation so w is the independent variable, then what is u? -2u+6w=9

Mathematics
1 answer:
Serjik [45]3 years ago
7 0

Answer:

u  = - ( 9-6w)/2

Step-by-step explanation:

to  evaluate for u in the expression -2u+6w=9 is simply to look for a way such that we would express u in terms of w and other variables.

solution

-2u+6w=9

-2u = 9 - 6w

divide both sides by the coefficient of u which is -2

-2u/u = 9 - 6w/-2

u  = - ( 9-6w)/2

therefore the value of u when rearranged in the equation -2u+6w=9 is evaluated to be equals to

u  = - ( 9-6w)/2

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Health insurers are beginning to offer telemedicine services online that replace the common office visit. A company provides a v
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Answer:

\text {CI} = (60.54, \: 81.46)\\\\

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=AVERAGE(number1, number2,....)

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=STDEV(number1, number2,....)

The standard deviation is found to be

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\text {confidence interval} = \bar{x} \pm MoE\\\\

Where the margin of error is given by

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Where n is the sample of 20 online doctor visits, s is the sample standard deviation and t_{\alpha/2} is the t-score corresponding to a 95% confidence level.

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MoE = t_{\alpha/2}(\frac{s}{\sqrt{n} } ) \\\\MoE = 2.093\cdot \frac{22.35}{\sqrt{20} } \\\\MoE = 2.093\cdot 4.997\\\\MoE = 10.46\\\\

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\text {CI} = \bar{x} \pm MoE\\\\\text {CI} = 71 \pm 10.46\\\\\text {CI} = 71 - 10.46, \: 71 + 10.46\\\\\text {CI} = (60.54, \: 81.46)\\\\

Therefore, we are 95% confident that actual mean savings for a televisit to the doctor is within the interval of ($60.54 to $81.46)

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