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deff fn [24]
3 years ago
5

What % of 25 is 15. Please help me

Mathematics
1 answer:
erik [133]3 years ago
6 0

Answer:

15 is 60% (percent) of 25.

Step-by-step explanation:

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And replacing we got:

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b) \bar X = \frac{\sum_{i=1}^n w_i x_i}{\sum_{i=1}^n w_i}

And replacing we got:

\bar X= \frac{3.2*6+2.0*3+2.5*2+5.0*8}{6+3+2+8}=\frac{70.2}{19}=3.695

Step-by-step explanation:

Part a

For this case we can calculate the the unweigthed with the following formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And replacing we got:

\bar X= \frac{3.2+2.0+2.5+5.0}{4}=3.175

Part b

For this case the weigthed mena is given :

\bar X = \frac{\sum_{i=1}^n w_i x_i}{\sum_{i=1}^n w_i}

And replacing we got:

\bar X= \frac{3.2*6+2.0*3+2.5*2+5.0*8}{6+3+2+8}=\frac{70.2}{19}=3.695

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