Elena
Jorge
19
Elena and Jorge have similar problems and find the same answer.
Each determines that the solution to the problem is 24.
Elena :
(14 + 42) + 7 + 42
Jorge :
14 + (42 = 7) + 42
Prove your answer to question 10

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:

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step-by-step explanation:

it is 10.6 according to my calculations