Last year, Woodward Elementary school gave away stickers to their students. The Kindergarten teachers gave away 8,002 stickers. The first grade team gave away 3,564 stickers. 2,243 stickers were given away across the second grade classes. Which expression represents the total number of stickers that the school gave away last year? helpp

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hello,

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

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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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