Which of the following statements is true regading circle graphs?
choose the correct answer below .
a. each sector of a circle graph shows a category and the relative size of the category .
b. a circle graph can only be used for categories where the data adds up to 360.
c. each sector of a circle graph that is the same size must be the same color .
d. the percents in each circle graph add up to 360 .

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: