Can you guys help me with these, the screenshots below can show you the answers, I will brainlist this answer and 5 star it

 (9) is -1  

(6) is 11  

(8) is 5

(7) is -4

from 0 -2 is two spaces to the left

from 0 -5 is  five spaces  to the left

from 0 -1 is one space to the left

from 0 1 is one space to the right

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: