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Svetllana [295]
3 years ago
6

Which is a90 degree rotation

Mathematics
1 answer:
Ugo [173]3 years ago
7 0

Answer:

(-x,y)

Step-by-step explanation:

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C.I. =  (2.297, 11.703)

Step-by-step explanation:

The t-statistic for difference of mean is given by,

t=\frac{\bar{x_{1}}-\bar{x_{2}}}{\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}}}}

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which indicates that we are 99% confident that the true difference between population means is contained by the interval (2.297, 11.703)

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