Queston 6 of 14 Is this relation a function? Justify your answer. 09 v BISET 1 2 3 4 5 6 7 8 9 10 11 A. Yes, because every x-value corresponds with a single y-value. B. Yes, because every x- and y-value is positive. C. Yes, because the number of x-values is the same as the number of y-values. O D. No, because two points with the same y-value have different x- values.

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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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