Rafael coloca una vara de 0.65 m de altura de forma que el extremo de su sombra coincida con el extremo de la sombra de un árbol. la sombra de lavar a es de 1.3 m y la del árbol 7 m teniendo en cuenta estos datos calcula la altura del árbol

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b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

a long term investor

step-by-step explanation:

because he is a long term investor