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2 years ago

12

Adele ya tiene 2 pegatinas y obtendrá 21 pegatinas adicionales de cada paquete de pegatinas que compre. ¿Cuántos paquetes de peg

atinas tiene que comprar Adele para tener un total de 44 pegatinas?

1 answer:

Zolol [24]2 years ago

3 0

Answer:

Step-by-step explanation:

Tienen 15 hojas de pegatinas en total.

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The scores on a test are normally distributed with a mean of 78 and a standard deviation of 13. Find the score that is 2 standar

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Answer:

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Step-by-step explanation:

Given that :

Mean (m) = 78

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Using the relation :

Zscore = (x - m) / s

2 standard deviations below the mean means a Zscore of - 2

Hence,

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Cross multiply

-2 * 13 = x - 78

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x = - 26 + 78

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Score which is 2 standard deviations below the mean is 52

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Answer:

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Step-by-step explanation:

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