Which fraction is equivalent to 5 Over 20? A. 4 Over 16 , because 5 Over 20 = one-fourth and One-fourth = 4 Over 16 B. 4 Over 12, because 5 Over 20 = one-fourth and One-fourth = 4 Over 12 C. 4 Over 19 , because 5 Over 20 = 5 minus 1 Over 20 minus 1 = 4 Over 19 D. 4 Over 15, because 5 Over 20 = one-fifth = 5 minus 1 Over 20 minus 5 = 4 Over 15

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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: