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The sum of 3 consecutive integers is 36
A) Find the smallest integer using a tape diagram
B) Let n represent the smallest integer. Write an equation that can be used to find the smallest integer.
C) Determine if each value of n below is a solution to the equation in part (b)
i) n = 12.5
ii) n = 12
iii) n = 11

answer by yourhope:

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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: