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3 years ago

13

Zora saved of her paycheck and to that she added $25.30. If the total that went into her savings was $101.68, what was the amoun

t of Zora's paycheck?

1 answer:

vovangra [49]3 years ago

6 0

The answer would be 76.38

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Answer: 3424.28

Step-by-step explanation:

Given data : 378, 361, 350, 375, 200, 391, 375, 368, 321

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Mean : $\overline{x}=\dfrac{\sum^n_{i=1} x_i}{n}$

$\\\\=\dfrac{378+361+350+375+200+391+375+368+321}{9}\\\\=\dfrac{3119}{9}\approx346.56$

Variance = $\dfrac{\sum^n_{i=1} (x_i-\overline{x})^2}{n-1}$

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