To prepare for a downhill skiing competition, roman completed three training sessions. the table shows an average time and distance for each session.
session 1 --2/125 time 9/10 distance session 2-- 3/200 time 11/12 distance
session 3--3/250 time 17/20 distance. did roman's rate, in miles per hour, increase from session to session? write an argument that can be used to defend your solution.

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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