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Solving Linear Equations with Rational Coefficients - Quiz - Level H
Question 1
Without solving, what can you tell about the solution to
this equation?
b + 14
(b + 14)
2
b is equal to 0 only.
There are infinitely
many solutions.
There is no solution.
bis equal to 1 only.

hello,

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: